Question

When fertilizer runs off into streams and lakes, what increases in the water? Select all that apply.
A. organisms like fish
B. the number of algae
C. the amount of oxygen
D. the amount of toxic chemicals

Answer 1

B. and D. 

I'm not sure though

Answer 2

I think A, B, and C. Might also be D too. So I would say all of the above. But I'm not exactly sure. Definitely a and b though.