Answer the following question given this paragraph:      Q: Dispersal occurs only on what time scale?   A:

Answer: evolutionary


Answer the following question given this paragraph:   The same agents that erode landscapes also erode soil. They are water, wind, ice, or gravity. Running water is the leading cause of soil erosion. Water is abundant and has a lot of power. Wind is also a leading cause of soil erosion. Wind can pick up soil and blow it far away.   Q: What is the leading cause of soil erosion?   A:

Answer: running water


Answer the following question given this paragraph:   In warmer regions, plants and bacteria grow faster. Plants and animals weather material and produce soils. In tropical regions, where temperature and precipitation are consistently high, thick soils form. Arid regions have thin soils.   Q: What happens to growth of plants and bacteria in warmer regions?   A:

Answer: