Question

when lake or ocean waters are anoxic, it means that they ______.
a. have grown too warm, and fish begin to die
b. freeze over in winter
c. do not contain enough oxygen to support plant and marine life
d. are full of life, with diverse species of wildlife
please select the best answer from the choices provided

Explanation:

The term "anoxic" means lacking oxygen. Option C states the waters "do not contain enough oxygen to support plant and marine life", which aligns with the definition of anoxic. Option A is about warm waters killing fish (not directly about oxygen), B is about freezing, and D is about life - rich waters (opposite of anoxic).

Answer:

C. do not contain enough oxygen to support plant and marine life