Question

Nitrogen and phosphorus are important limiting nutrients in some aquatic ecosystems and are determining factors in the amount of phytoplankton growth. When there is a large input of nitrogen and phosphorus the growth of phytoplankton and algae drastically increases, resulting in a large accumulation called an algal bloom and this in turn causes aphotic zones in aquatic ecosystems. In aphotic zones, photosynthetic organisms cannot survive. We would expect this to happen most often in what ecosystem(s)?

A) ocean
B) lake and pond
C) ocean and river
D) river and stream

Answer 1

B. Lake and pond

Step-by-step explanation:

Bcoz they are lentic water bodies.. Nutrients release in that get accumulate easily.. And most of the ponds are present near human zone. Or agricultural fields.

The extra amount of fertilizer flows and get down in ponds and increases the amount of N and P

Answer 2

We would expect this to happen most often in lakes and ponds.