Farmers recently have started to use a lot of fertilizer on farms. Extra fertilizer runs off the farms, into the rivers, and out into the oceans. Which of the following would be a likely outcome of this?

A) Animals will use the fertilizer to grow.
B) Kelp on the bottom of the ocean will grow.
C) Coral reefs will grow faster.
D) Algae will grow, causing algae blooms.