Desalination produces chemicals that harm wildlife.

How are grasslands maintained by nature?

What are subsidies? How can subsidies increase or decrease mining and mineral use?

What is raw sewage?

An area that produces runoff is called a _____________________.

Because fish farms raise fish in an enclosed and controlled environment, it is safe to eat fish from a fish farm.

What is the dominant herbivore in grasslands?

What is this structure? What is its purpose?   

What is a food desert?

a.  Calculate the monthly payment on a 15-year mortgage in the amount of $250,000 at 6%.  b.  Calculate the total interest payment on this 15-year mortgage.