The answer would be b I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you
Answer:
Human interaction with the ecosystem has rapidly spread disease to Yellowstone's wildlife, which has proven to have adverse effects on populations. Also, humans tend to leave trash in poor areas. Littering is a problem in Yellowstone because it can be ingested by the wildlife and also pollute the park.
Explanation:
Also called as "green plants"
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