From an ecological point of view, explain the famine in northern Africa. Provide two examples of how the environment is influenced by animal behavior. Explain the four major human causes of extinction. What are
If we consider that increasing desertification and rising ocean levels will take away more arable (可耕种的) land, we arrive at a crucial “trilemma”(三难困境). Should we use our spare soil for agriculture, reforestation or bioenergy? Such a question would make sense in a multilateral, ...