Question

When an algal bloom dies, the bacteria that decompose the algae
-kill fish.
-deplete carbon dioxide levels in the water.
-kill the plankton population.
-deplete oxygen levels in the water.

Answer 1

The algae decompose. Algal blooms can be a nuisance and can be toxic to aquatic animals, such as fish. When an algal bloom dies, bacteria decompose the algae and use up oxygen in the water. The break down of organic matter also uses up oxygen in the river.

Answer 2

Deplete oxygen levels in the water.

Answer 3

yes its deplete oxygen levels in the water=]