Because of the slight temperature changes within the ranges of just between 20 o C and 30 o C in the Savanna biome, it is easy for the animals and plants to adapt. Because of their thinner bark, forest trees would need at least twice as long as savannah trees to reach fire-resistant sizes making them far more sensitive to burning. Stapelia are a genus of flowering plants in the family Apocynaceae. Savannas are found in tropical and subtropical regions, primarily in Africa, South America, Australia, and parts of Asia. Average annual. C) large variations in seasonal rainfall B) acidic soils. Low rainfall, wildland fires, and grazing by animals are three factors that maintain. There is only one building spawned. Badlands are rare warm biomes in Minecraft that contain an abundant supply of Terracotta. Hence, it may not generalise to savannas, which are ecologically distinct from forests, as they are. C) frequent fires. Amongst the herbivores, some, like the zebras, are grazers and feed on grasses. Because human-managed pastures are widespread throughout tropical savanna regions [Ramankutty et al. The best place to get Allays in Minecraft is the Woodland mansions. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of A) insufficient annual precipitation. Autotrophs (as one of the Biotic Factors in the Savanna Ecosystem) Autotrophs in the. Regular disturbances hold back other woody invaders, even in places where climate and soil conditions might otherwise support forests. grazing and frequent fires. (credit: Oliver Herold) The trees of the temperate forests leaf out and shade much of the ground; however, this biome is more open than tropical wet forests because most trees in the temperate forests do not grow as tall as the trees in tropical wet forests. Terrestrial biomes include tropical rainforests, temperate forests, grasslands, deserts, tundra, taiga, savanna and chaparral. freshwater and marine; majority of biomes. , 2) The growing season would generally be shortest in which of the following biomes? A) savanna B) temperate broadleaf forest C) temperate. short, because there is very little sunlight during the growing season. 7 to 4. The region is widely covered with grass, shrub, thicket, and wide scattered trees. In Minecraft, desert biomes get a bad reputation, but they can actually be some of the most useful biomes in the game. ). Conditions are warm to hot in all seasons, but significant rainfall occurs for only a few months each year—about October to March in the Southern Hemisphere and April to September in the Northern Hemisphere. A vegetation type is not as easy to recognize as a biome. tree savanna. , Which of the following statements best describes the effect of climate on biome distribution? A). Based on your observations, you conclude that each of these organisms occupies a different ecosystem. Study with Quizlet and memorize flashcards containing terms like 1) Trees are rare in the savanna biome because of A) insufficient annual precipitation. Once the fires ebb, the grasses regenerate quickly. Savanna Grassland Biome Climate. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of a. C) frequent fires. Wasserman. Scientists supposed that the ecosystem’s high annual precipitation would result in greater tree growth. In fact, three different baobab trees on Madagascar are endangered. However, some woody plants respond to disturbance events through. Windswept Savanna can spawn fairly crazy rock formations. Temperate forests and grasslands are not the same biomes solely because of the. In contrast to savanna trees and grasses, forest trees are fire-prone and shade tolerant, adapted to persist in conditions of low light availability and in the absence of fire (Ratnam et al. vegetation structure refers to the type of vegetation that dominates a region, such as closed-canopy forest (dense) or open (sparse) grassland Biomes are the second-largest units in the spatial hierarchy; only the. Cheetahs are typically 3. Study with Quizlet and memorize flashcards containing terms like When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes __________. A) insufficient annual precipitation. A biome is a large community of plants and animals that occupies a distinct region defined by its climate and geography. Lion, large, powerfully built cat that is second in size only to the tiger. Study with Quizlet and memorize flashcards containing terms like 1) Trees are rare in the savanna biome because of A) insufficient annual precipitation. Trees are not usually found in the tundra biome because of. Minecraft's rarest biome is, ironically, the home to one of its most iconic mobs. The fruit itself is encased in a hard, woody shell. What percentage do Savannas cover in land surface? 20%. Savanna receives moderate rainfall up to 10 to 30 inches annually; This is why savanna experience dry season almost all year round. ingens) is another extremely unique looking savanna plant. B) acidic soils. Forest is the smallest of South Africa’s biomes, occurring as an archipelago of small patches along the escarpment and coastal lowlands (Mucina and Geldenhuys 2006) (Fig. About Minecraft Savanna. Earth's land surface is covered by biomes. Lucky for you, this Minecraft 1. Tree crowns are flattened or. springs, What distinguishes the savanna and grassland biomes? a. biosphere. For the savanna biome to have expanded, forests would have had to retreat. It falls within the savanna biome in analyses of tree growth that compare grassland with savanna sites. B) acidic soils. in Africa, Australia and So uth America occurring between tropical forests and deserts. The savanna biome is mostly made up of grass but there are a few trees. Savannas have shrubs and isolated trees. d. It falls within the savanna biome in analyses of tree growth that compare grassland with savanna sites. Biology Biology questions and answers Chapter 40 1) This is the major reason that trees are rare in the savanna biome A) insufficient annual precipitation. This means that. A savanna is one type of grassland biome. what is rare however is that those acacia trees dont seem to be in a savanna biome at all. There are two kinds of. 1) Seed: 1731. Evolutionary partitioning between Grassland, Savanna and Forest is supported suggested by low introgression of Biomes at family and genus level, and by a dominance of life-forms adapted to open habitats environments. Savanna. Image Courtesy: 1. The R1 range was mainly characterized by long dry seasons and rare fires (Figure 4). Plants & Diseases Plant Identifier. Savannas are found in Africa, North America, South America, and Australia. Both biomes feature gravel that replaces most grass blocks and fewer trees. This biome is found when a savanna is formed on top of a plateau or beneath a mountain. frequent fires d. 1016/j. B) acidic soils. E) permafrost. coral reefs are those rare oceanic biomes affected by latitude; in fact, this type of biome appears only in. In botany, a tree is a perennial plant with an elongated. The savanna biome is often described as an area of grassland with dispersed trees or clusters of trees. Savanna grassland weather is typically warm with temperatures ranging from 20 to 30 degrees Celsius (68 to 86 degrees Fahrenheit). Because we are interested in capturing the oldest diversifications, as these will most closely align to the age of the biome, we focus on these. Digging upwards in this biome is hazardous, as top layers of gravel can drop and suffocate the player. 2 “The Update that Changed the World. Mean annual. 1 b). a. The amount of rainfall that savannas receive is the most important factor in determining the number and size of trees that grow in them. 2. A savanna is a rolling grassland scattered with shrubs and isolated trees. The major terrestrial biomes are listed below. , 2003, 2009). aquatic biomes. Study with Quizlet and memorize flashcards containing terms like Which of the following is not a freshwater ecosystem? a. Exercise 2: Choose the correct term to complete each sentence: The _____ biome has a wet and dry season. '. Grasslands have a dry, warm climate. Mean annual. The first two are tropical grasslands. The genus is native to southern Africa and comprises about 50 species. 4. I did some more tests specifically on the Modified Jungle Edge biome, because getting 2 hits out of 1,000,000 isn't very accurate. *Many trees are covered with mosses vines and other plants that grow on the trees so that they can be closer the sun. 2. land biomes; natural vegetation. Flag this Question. Chapter 40 Exam – Student Copy 40. -large variations in seasonal rainfall. Savanna experience wet summer season (6 to 8 months). Tropical Forest. C) extreme winter temperatures. It is mainly found in Africa, South America, India and Australia. There are five major types of biomes: aquatic, grassland, forest, desert, and tundra, though some of these biomes can be further divided into more specific categories, such as freshwater, marine, savanna, tropical rainforest, temperate rainforest, and taiga. A biome is an extensive geographic region with relatively uniform vegetation structure. , 2) Which of the following statements best describes the effect of climate on biome distribution? A). Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of A) insufficient annual precipitation. 7 (3 reviews) Trees are rare in the savanna biome because of. Therefore, some trees and grasses have large horizontal root systems by which they obtain water dur-ing the dry season. D) large variations in seasonal rainfall. The savanna is home to a wide variety of animals, including elephants, lions, zebras, and giraffes. acidic soils c. Yet the true extent of these changes may be underestimated because of the lack of clarity regarding the definition of the grassland biome (Ratnam et al. Some abiotic factors in the savanna biome. Vegetation on the African savannas, for example, feeds animals including zebras, wildebeest, gazelles, and giraffes. Monechma Hochst. These root systems also enable plants to quickly grow again after a fire. The major terrestrial biomes are listed below. tall, because of the very fertile soils. Study with Quizlet and memorize flashcards containing terms like 1) Trees are rare in the savanna biome because of A) insufficient annual precipitation. Is the savanna an example of a biome? Terrestrial Biome Examples. Climate differences between grassland and savanna sites Sites in the higher-elevation grasslands had lower average monthly temperatures, fewer growth days and lower summer heat units than the lower-altitude savanna sites ( Table 1. 2. 1) Seed: 1731. With the rapid rate of deforestation in places like the Amazon basin, some plants may become extinct before being cataloged, let. A savanna or savannah is a tropical or subtropical woodland ecosystem characterized by the trees being sufficiently small or widely spaced so that the canopy does not close, above a continuous tall grass understory. The Savanna biome is a grassland scattered with shrubs and isolated trees. C) extreme winter temperatures. B) acidic soils. use groundwater. Reece, Lisa A. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of: -insufficient annual precipitation. Instead of dirt or podzol, the ground is made of the biome-exclusive mycelium, and trees are replaced with giant. In addition to the rock formations, the Windswept Savanna biome also features a variety of vegetation, including tall grass, acacia trees, and. The lack of water makes the savanna a difficult place for tall plants such as trees to grow. Savanna biome vegetation is described as rain-green. 1 ), often situated within a grassland matrix (Fig. Whittaker (1975) lists six major terrestrial physiognomic types - forest, woodland (see Section 1. This feature, in combination with the surface fire regimes that are typical in savannas, results in very low fire-related mortality in adult savanna trees. Using a well-sampled, time-calibrated phylogenetic tree of the woody flora, we examine the timing of 139 evolutionary splits between savanna trees in Africa as a marker for the age of the savanna biome. E) permafrost. The savanna biome is a type of ecosystem characterized by vast open grasslands with scattered trees and shrubs. lakes b. Reasons for the existence of grassy. *Warm year round. On the one hand, this scarcity may reflect fundamental differences between biomes: the discontinuous tree cover that defines savannas, for example, may restrict the establishment and spread of a plant life-form that uses woody canopies for structural support (18, 22). With. Baobab trees grow to more than 80 feet tall and have thick trunks from 30 to 90 feet in diameter. habitat. In alpine biomes, precipitation varies. -poor soils so cannot support even low densities of big game. When you first enter a savanna, you may not even realize you've entered a new kind of habitat. Flag this Question. The climate of the Savanna ecosystem is quite warm, and the temperature ranges between 68 degrees Fahrenheit and 86 degrees Fahrenheit. Savannas are home to a wide diversity of animals. herds of herbivores, The proper order, from smallest to largest, for the. The hardwood broadleaf deciduous trees around the world. Tundra is known for its _______. Because savannas and forests are respectively. “Savanna. Savannas are usually a transitional zone between a forest and a grassland. The savanna two very different seasons, it has one very dry season and one very wet season. Oak Woodland. , , In the ecological development of terrestrial biomes, which factor is most dependent on all the others? A) the species of colonizing. C) extreme winter temperatures. *Near the equator. Not enough rain falls on a savanna to support forests. Because fire is an important source of disturbance in this biome, plants have evolved well-developed root systems that allow them to quickly re-sprout after a fire. African Lions. It has lots of ponds and wildlife. What is a biome? A major type of ecosystem. A great amount of sunlight reaches the upper canopies, but very little sunlight filters down to the understory and forest floor. This data might sometimes not be a reliable indicator of how "rare" a biome actually is. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of a) large variations in seasonal rainfall b) acidic soils c) frequent fires d) insufficient annual precipitation e) permafrost, Which of the following statements best describes the interaction between fire and ecosystems? a) Unlike northern coniferous. It is a transitional biome between those dominated by forests and those dominated by. A large body of literature exists on the invasion of savannas in the Neotropics and northern Australia where invasive plants, especially African grasses,. A savanna where open-grown oaks are the dominant tree. The plants are succulent and have large, fleshy stems. It is also rare for living things to survive at temperatures exceeding 45 °C (113 °F); this is a reflection of evolutionary response to typical temperatures. Lianas are often described as “infesting” the trees they climb because of their tendency to smother them. The browsers, like the giraffe, primarily consume. A savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome. large predators c. Although they do have scattered trees and shrubs, these biomes are dominated by grasses and other plants. C4 grassy biomes cover vast areas that are warm enough and wet enough to support closed forests. Savanna fires, however, tend to be low on the ground, burning the grasses and young saplings, but not big or hot enough to scorch adult trees. 2 for definitions of these), shrubland, semi-desert scrub, desert and grassland. Very few grasse Forest Biome ith mean annual rainfall of more than 525mm in the winter rainfall region and more than 725 mm rainfall in the summer rainfall region. permafrost, Which of the following statements best describes the effect of climate on biome distribution? a. Most of the rain falls for around 6-8 months and then there is a period of dry from 4-6 months where there is hardly any rain, this is in the winter months. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of acidic topsoils. Biology & Life Sciences Chapter 40 Trees are rare in the savanna biome because of. are suitable for corn and wheat, but not suitable. l. ”. Here are some of the most interesting things about it: 1. permafrost, Which of the following statements best describes the effect of climate on biome distribution? a. Which of the following biomes is correctly paired with the description of its climate?. Savannas have a seasonal climate with distinct wet and dry seasons. Not enough rain falls on a savanna to support forests. About Minecraft Savanna. Biome that lacks trees and has permanently frozen soil. , Which of the following statements best describes the effect of climate on biome distribution? A) Average annual temperature and. We did not find mesobrowser densityThe net effect on trees is rare and episodic recruitment of adults in tree-fall gaps. 2019) or in. 1) Trees are rare in the savanna biome because of A) large variations in seasonal rainfall. Tropical savannas are indeed a curious biome, neither grassland nor forest, but one in which two contrasting life forms—C 3 trees and C 4 grasses—compete for dominance in the face of limited resource availability and frequent disturbances such as fire and herbivory. frequent fires, The growing season would generally be shortest in which of the following biomes? a. Biology & Life Sciences Chapter 40 Trees are rare in the savanna biome because of. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of a. Savannas are areas that are mostly made up of grasses with sparse trees. 1 The Mushroom Fields Biome. Because of this external influence, most characteristic Cerrado formations must probably be found in the central portion of the biome (Castro et al. They are also great for. Test 11 Chapters 40-42 1) Trees are rare in the savanna biome because of A) tropical storms. D). Many animals in the savanna are. Giraffes, one of the savanna’s permanent residents, mainly eat acacia twigs and leaves. the leaves part is not rare at all i dont think since leaves change color based on bione like grass amd theres only like 2 types of leaves, spruce ones and the rest of the trees use the same one i think. The forest biome, then, includes the most different types of life form, but it is dominated by trees, which together form continuous coverage. , 2) Which of the following statements best describes the effect of climate on biome distribution? A) Average annual temperature and. Spawns only between jungles and savannas, and that's why it's so rare. The savanna biome covers 50% of the African continent, encompassing diverse ecosystems that include densely wooded Miombo woodlands and Serengeti grasslands with scattered trees. The small amount of high sun rainfall in the savanna is not enough to sustain trees in the savanna biome. Dripstone caves were added in 1. This article discusses biotic factors in the savanna ecosystem, as follows;. Many of Earth’s biomes are terrestrial, or land-based. Below are the characteristics of a savanna: Trees and grasses: The savanna is an open grassland with a few solitary trees and bushes here and there. It also highlighted the existence of savanna on rare,. Concepts and definitions. B) acidic topsoils. In Spanish, the word cerrado means closed, shut, thick or dense, but in Brazil, the word has been used to describe an arid ecosystem and all the native species that are adapted to live in its seasonally variable climate. We mainly separate savannas into three types: climatic, edaphic, and derived. A tree savanna in Tanzania, East Africa ( Tarangire National Park) A savanna or savannah is a mixed woodland - grassland (i. Perspectives in Ecology and Conservation . Their dense foliage provides a rare sight for many. The proverbial ‘king of the beasts,’ the lion has been one of the best-known wild animals since earliest times. The Shattered Savanna and Shattered Savanna Plateau are rare variants of the common Savanna biome. Savannas are known as tropical grasslands. Biomes are characterized by specific types of vegetation and animal life which have adapted to the conditions of the area, which include temperature, soil type, and amount of light and rain. The buck moth (Hemileuca maia) and the rare huckleberry grasshopper (Melanoplus fasciatus) are apparently highly associated with savanna. large variations in seasonal rainfall e. phytoplankton. Terracotta can only be discovered. Unlock document. 1) Trees are rare in the savanna biome because of A) insufficient annual precipitation. Not enough rain falls on a savanna to support forests. , 2009; Wigley et al. D) large variations in seasonal rainfall. -most endemic amphibions, birds, and mammels found here. The Savanna Biomes (Mesic/Dystrophic and Arid/Eutrophic) of Angola cover over 90% of the country. Savanna experience wet summer season (6 to 8 months). We consider the species limited to the Cerrado biome as endemic, and species largely distributed along the Cerrado, but. tropical forests: Click the card to flip 👆. Savanna is a biome in Minecraft that has greenish-brown grass and acacia trees. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of a) large variations in seasonal rainfall b) acidic soils c) frequent fires d) insufficient annual precipitation e) permafrost, Which of the following statements best describes the interaction between fire and ecosystems? a) Unlike northern coniferous forests, temperate broadleaf. Temperate Grasslands. Many of these species are rare. Savannas are found in tropical and subtropical regions, primarily in Africa, South America, Australia, and parts of Asia. frequent fires. Shattered savanna is amazing especially on bedrock. During the dry season the temperatures are either very hot or cold. Climate differences between grassland and savanna sites Sites in the higher-elevation grasslands had lower average monthly temperatures, fewer growth days and lower summer heat units than the lower-altitude savanna sites ( Table 1 , Fig. 2. This Chapter presents the case for the recognition, across Africa, of these two distinctive savanna biomes, both defined by the co-dominance of fire-tolerant trees and C 4 grasses, falling within seasonal climates of warm, wet summers and mild, dry. The origin of the savanna biome. Open Document. *Most of the animals are tree dwellers as well. Test 11 Chapters 40-42 1) Trees are rare in the savanna biome because of A) tropical storms. docx from AA 1Chapter 40 HW Questions 1. Savanna is a very popular biome because it has tons of trees that you can climb to the top and then build a treehouse on. The animals of the savanna have developed unique skills and characteristics to take advantage of. Because of the slight temperature changes within the ranges of just between 20 o C and 30 o C in the Savanna biome, it is easy for the animals and plants to adapt. abiome. Water availability was limiting to trees because, at the spatial grain of our. The same happens with grassland and savanna ecosystems — the most important elements in these environments are grasses and. ecosystems Please select the best answer from the choices provided, The principal characteristic that determines whether an aquatic ecosystem is classified as. Midwestern Oak Savannas. a tropical rain forest. 1. Once the shell is removed, the pulp of the tree is highly nutritious. Urry, Michael L. C 4 grasses are intolerant of shading and are rare or absent in closed forest understories (Ehleringer, 1978; Sage, 2001). Disturbance events such as herbivory and fire negatively affect woody plant communities. trees, and grass. 1). About us. Both biomes feature gravel that replaces most grass blocks and fewer trees. Question: H Cooe the one alternative that best completes the statement or answers the question. Although the majority of. *350 centimeters of rain each year. ecotone. of South America are covered by grassland called savanna. Digging upwards in this biome is hazardous, as top layers of gravel can drop and suffocate the player. The climate of the Savanna ecosystem is quite warm, and the temperature ranges between 68 degrees Fahrenheit and 86 degrees Fahrenheit. They have a dry climate and are located near the equator, which. B) acidic soils. Park (KNP), because of the extensive literature on mesobrowser and woody plant com-munity ecology at that site. Fire is a frequent and widespread natural disturbance in tropical grassy biomes. The proverbial ‘king of the beasts,’ the lion has been one of the best-known wild animals since earliest times. A plant community that contains trees, but grasses and forbs are the dominant plants. South America has such diverse biomes as tropical rain forests, tropical savannas, extremely dry deserts, temperate forests, and alpine tundra. also spelled: savannah. Grasslands support a variety of species. The largest of these biomes are deserts, savanna, and tropical forest. Savanna Biome: Savanna biome is a biome that receives minimal rainfall of about 250 to 750 millimeters per year. The original list was rainforest, seasonal forest, forest, shrubland, taiga, tundra, plains, swampland, desert, frozen desert, and savanna. Many of these species are rare. Longleaf Pine Is Home to Rare Plants and Animals. Trees. The rain forest of the Pacific Northwest is composed of a few species of broadleaf. saplings of savanna trees. E) permafrost. 2). For example,. Acacias are found in the savanna biome. 4. snow and ice. Chapter 40 Exam – Student Copy 40. These biomes are dominated by a mix of grasses and small trees. E) permafrost. 4 yr. This is dominated by medium to tall grasses (up to 3-4 m!), which form a continuous or discontinuous cover. African savanna elephants (recently distinguished from forest elephants), giraffes, rhinos, lions, zebras, and many other wildlife species live in Africa’s savannas. Fynbos: -much richer in plant species. A savannah is a tropical grassland because this biome is located at tropical latitudes, but it is drier than most tropical forests. an African savanna c. Stapelia are a genus of flowering plants in the family Apocynaceae. 2) Which of the following statements best describes the effect of climate on biome distribution?Savannas are the second largest biome accounting for c. Figure 3. D) large variations in seasonal rainfall. 2016; Hoffmann et al. BP in the Deccan, with the step-wise reduction in ISM activity and associated MAP leading to a gradual spread of deciduous trees and the. -3) proteoid. Trees are rare in the savanna biome because of. level 1. 22 – Brown Panda. Most endemics of conservation concern occur in Grassland (68. Rainfall in the savannas is moderate, up to 75 cm per year – not enough to cause major floods. Animals native to African savannas include African elephants, zebras, horses, and giraffes. South African biomes serving as rangeland include parts of the Grassland, Nama-Karoo , Succulent Karoo, Savanna, and Albany Thicket Biomes , and the Indian Ocean Coastal Belt , but not the Fynbos Biome (although lowland fynbos was once rangeland it has largely been transformed), Desert or. Study with Quizlet and memorize flashcards containing terms like Trees are rare in the savanna biome because of a. The savanna has a hot climate with very little rainfall. seas d. , scattered trees) above a continuous tall grass understory (the vegetation layer between the forest canopy and the ground). Tree trunks are used to store water, fruits are consumed; and the bark and foliage are used for a number of medicinal purposes. Here we consider tropical savannas the ecosystems characterized by vegetation with continuous grassy ground cover, regardless of tree cover density, and with an ecological prominence of C 4 grasses as in the Cerrado sensu lato in central Brazil (the terms C 3 and C 4 refer to. It is well developed over the lowveld and Kalahari region of South Africa and is also the dominant vegetation in Botswana, Namibia and. The extent of this climate mismatch has been revealed by physiologically based global vegetation simulations and by large empirical. While badlands are great for collecting gold and other crafting materials, you cannot expect to settle here because there’s a lack of trees, grass, and water, among other necessities. The Savanna Biomes (Mesic/Dystrophic and Arid/Eutrophic) of Angola cover over 90% of the country. non-living components of an ecosystem. Temperate forests and grasslands are not the same biomes solely because of the. C) frequent fires. C) extreme winter temperatures. Savannas are areas that are mostly made up of grasses with sparse trees. sparse precipitation and extreme cold temperatures. C) extreme winter temperatures. 1) Trees are rare in the savanna biome because of. Recent analyses and the STEP project have confirmed that the climatic uniqueness (Robertson & Palmer 2002) and floristic diversity justify its recognition as a biome. B) excessive annual precipitation. B) excessive annual precipitation. Figure 29. Trees generally transpire more water than grasses because of their more extensive root system, greater leaf area, and greater canopy roughness. B) acidic soils. Savanna Biome. Yet a 2011 study found that the more instances of heavy rainfall a savanna received, the fewer trees it had. 2005). D) large variations in seasonal rainfall.