Question

Which statement about environmental changes is true?

A-They may affect several populations in an ecosystem.


B-They have no effect on living organisms in an ecosystem.


C-They cannot be caused by human activity.


D-They affect food chains, but not food webs.

Answer 1

a

Step-by-step explanation:

Answer 2

Answer: A

Explanation: They may affect several populations in an ecosystem. If one group of species is either removed or added to a ecosystem, it can cause disrupction among the current living species, their food system and actual lifestyle.