What happens when species are endangered and population levels decrease?

Question

What happens when species are endangered and population levels decrease?

Answer 1

Exactly what your question says... the levels decrease and they can approach extinction.

If you are pertaining to what is the effect of such a thing, well an infinite number of different things can happen depending on what animal is being affected as the environment is interconnected.

If it's a bird, per say, maybe it eats insects that normally feed on pests that eat crops. So you have an explosion of crop destruction since it's natural predator is extinct.

Answer 2

Pretty vague question.

Population level decreases, THEN species is considered threatened or endangered.

Without protective measures, species may well become extinct.

Answer 3

you say good by