Which of the statements below are true?

insects are rarely important to the health of forest ecosystems.
people's activities can improve the health of an ecosystem.
people's activities have no measurable effect on ecosystems.
plants produce food for ecosystems.
predators keep ecosystems healthy.

-People's activities can improve the health of an ecosystem.

-Plants produce food for ecosystems.

-Predators keep ecosystems healthy.

Explanation:

-People can have significant impacts on ecosystems, and while human influence is typically thought of as destructive, we can also help keep an ecosystem healthy by not disrupting natural patterns.

-Plants produce food for many consumers in an ecosystem and are a source of food for large numbers of organisms that exclusively consume plantes.

-Predators are healthy for an ecosystem because they prevent the overpopulation of any one species.