Which of the following best describes soil in many tropical rain forests?

• A. Nutrient-poor and heavily leached due to high rainfall
• B. Rich in organic matter and nutrients due to rapid decomposition
• C. High in mineral content and low in biological activity
• D. Composed mainly of sand with little clay or silt

Answer: (A)

Verified step by step guidance

1. Understand the characteristics of tropical rain forests: Tropical rain forests are known for their high rainfall and warm temperatures, which influence soil composition and nutrient availability.
2. Consider the impact of high rainfall: Heavy rainfall in tropical rain forests leads to leaching, a process where water washes away nutrients from the soil, making it nutrient-poor.
3. Examine the role of decomposition: While decomposition is rapid due to the warm and moist conditions, the nutrients released are quickly absorbed by plants or lost due to leaching, leaving the soil itself nutrient-poor.
4. Analyze the options provided: Evaluate each option based on the known characteristics of tropical rain forest soil. For example, nutrient-poor and heavily leached aligns with the effects of high rainfall, while rich in organic matter and nutrients does not account for leaching.
5. Select the best description: Based on the analysis, the soil in tropical rain forests is best described as nutrient-poor and heavily leached due to high rainfall.