Question

when one part of an ecosystem changes, what happens as a result?

only some living things are affected.

every living thing within the ecosystem is affected.

living things are not affected because of adaptations.

none of these happen.

Explanation:

Ecosystems are interconnected systems where living things (biotic factors) and non - living things (abiotic factors) interact. A change in one part, like a decrease in a prey species, will impact predators (less food), plants that depend on that prey's habitat, and so on. So every living thing in the ecosystem is affected, not just some, and adaptations don't mean no effect (adaptations are responses to change, not prevention of being affected), and the idea that none are affected is wrong.

Answer:

B. Every living thing within the ecosystem is affected.