Review the video Nutrient Loading In Lake Erie.

• Explain eutrophication and how it affects the food chain in Lake Erie.
• Describe the phosphorus cycle and explain how it is affected by human activities.
• Compare how energy and nutrients (matter) flow within an ecosystem. Is that flow fundamentality different?

According to the Environmental Protection Agency, in 2013 every American produced on average 4.40 pounds of waste every day. In response to your peers, discuss how the law of conservation of matter is pertinent to that problem. Can you think of simple solutions that could help reduce the amount of waste we produce?