In addition to frequent fires the factors that maintain grass land biome are:
Correct answer: D. Low rainfall and grazing by animals
- A. Acidic soil and low rainfall
- B. High temperature and acidic soil
- C. High rainfall and low temperature
- D. Low rainfall and grazing by animals
Explanation
Grassland biomes are maintained by several factors including low rainfall, which limits tree growth and encourages grasses to thrive. Grazing by animals is another crucial factor as it helps control plant growth and maintain the grassland ecosystem. While high temperatures are common in grasslands, acidic soils are not typical. Hence, the correct answer is low rainfall and grazing by animals. Other options are incorrect because they either include conditions not typical to grasslands or are incomplete in describing factors that maintain the biome.
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An ecosystem consists of organisms interacting with one another and with abiotic factors such as light, water, soil and temperature. The topic covers populations and communities, food chains and webs, trophic levels, ecological pyramids, energy flow, nutrient cycles and ecological succession.
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