Which of the statements below are true? choose all that apply.

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

would the answer be physical geography and cultural geography i haven't studied geography but i searched it online and those are my answers.

hope this .

plz mark me as brainliest answer: d

the answer is option c.

explanation:

recycled water alludes to the water that being utilized again after it already  used for farming purposes.   this kind of water frequently contains pharmaceutical gathering due to the compound compost that is utilized for the plants is consumed into the water.