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To answer Jake R's question: Answer|Most common form of hydropower comes with dams. Dams function by altering the flow of water from a source; the buildup, or reservoir, creates a powerful flow/intake that can then turn a turbine, and thus power a generator. Benefits: dams are relatively cheap, are ...

It's also always a good idea to keep an eye out for current events related to the environment. Even just looking up "environmental news" or skimming through some headlines online can lead you to lots of different current environmental issues that make for great examples on test questions.

^^ No worries about not knowing the answer for sure since yours is correct! Your turn

Explain environmental stewardship and relate it to aquatic ecosystems/resources with an example?

Maybe..?|Internal costs are costs that companies will include in their financial plans: costs like wages, or materials that are factored into operating costs, etc. External costs are costs typically not included by companies: taxes from pollution, costs of dumping wastes, etc. Marginal costs are......

^great answer your turn!

Okay, here's an easy one:

Describe the difference between bioaccumulation and biomagnification and give at least one example of each?

It's been a week since this thread has been active, so if anyone wants to ask another question, go ahead!

Troy High School, SoCal, Division C! First time at nationals for me, and I'll be doing Green Gen and Bungee