What are the biggest threats to the natural environment? How can a small modification
in the natural environment threaten the
world ecosystem?​

Have you heard of the food chain? If that specific modification targets something in the food chain, let's just say plants, the whole food chain will collapse. For example if plants died suddenly, insects would die out and so would frogs. Birds would also be more competitive because there food would be scarce and there prey would also have to try harder to find more birds because the birds are dying due to lack of food.

Explanation:

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