Respond to the following in a minimum of 225-275 words:

part 1

Compare and contrast how natural and human-induced processes have influenced global climate change. Compare and contrast food chains and food webs. What are the strengths of each concept in describing ecosystems? Describe biomagnification, and explain the impact it has on humans.

part 2

Select an ecosystem and choose one abiotic and one biotic factor within it. How do these factors interact and how does this affect the ecosystem? How do limiting factors affect carrying capacity? Support your response with examples.