Question 1: Describe the two types of ecological succession.
Question 2: Give another name for autotrophs and heterotrophs.
Question 3: What are the 4 biogeochemical cycles? Need Assignment Help?
Question 4: Human activities intensify what natural process associated with the carbon cycle?
Question 5: Is it possible to run out of fresh water? Explain your answer.
Question 6: Why does denitrification not counterbalance nitrogen fixation?