What is a food chain ?

A food chain shows the sequence of how organisms obtain their energy.

A food chain usually starts with a plant and ends with an animal. To complete the cycle, decomposers come in to clean up the waste and return nutrients to the soil.

Simply stated that food chain represents the series of events in which food and energy are transferred from one organism to another in an ecosystem.

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

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option c is the correct answer.