Which of the following best describes the fate of energy in ecosystems? a. it will ultimately be recycled back into the ecosystem. b. it flows from secondary consumers to primary consumers. c. it enters most ecosystems in the form of sunlight. d. it flows through and is used by ecosystems. select the best answer from the choices provided a b c d

The correct answer is option d. It flows through and is used by ecosystems.

Energy flows through ecosystems from a lower trophic level to a higher trophic level. This is the ultimate fate of energy. Not only energy flows but also it is used up by the organisms of different trophic levels in an ecosystem. Energy is an absolute requirement for each organism on this earth to sustain its daily metabolic activities. So, in ecosystems one organism feeds upon another one so as to obtain energy in the form of food and this way energy keeps flowing and used up by all the organisms amongst various ecosystems.

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