Question

Why are green plants or algae good indicators of the distribution of living organisms in an area?

Answer 1

Because they are autorotrophs(they make their own food)so most organisms depend on them.

Answer 2

Answer: They perform photosynthesis.

Explanation:

All the green plants or algae are good indicators of life because they perform photosynthesis. This process produces food which is an essential component of life.

The producers can initiate life at any place, because all the organism depend on producers for their energy needs.

In absence of producers life in not possible.