a) Describe the importance of plants in the ecosystem OTHER than their role as producers. This should include their role in soil holding, in the water cycle, in temperature, and in any other area in which they are involved.
b) Define and discuss bioremediation, stating its benefits over other types of environmental cleanup, and describe several examples of how this process has already been used.
c) Discuss the topic of global warming and describe steps that can be taken to avoid it.