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- Compare grazing and detrital food webs. Why would they both be present in the same ecosystem?
- Why are drinking water supplies still a major concern for many countries?
- The extremely low precipitation on of subtropical desert biomes might lead one to expert fire to be a major disturbance factor; however fire is more common in the temperate grassland biome than in the subtropical desert biome. Why is this?
- In what ways are the subtropical desert and the Arctic tundra similar?
- Describe the conditions and challenges facing organisms living in the intertidal zone.
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