State whether the following statement is true or false:

To show the flow of energy through ecosystems, food chains are sometimes drawn as energy pyramids.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept:Food chains are occasionally depicted as energy pyramids to illustrate the movement of energy through ecosystems. The trophic levels are represented by the steps of the pyramid, with primary producers at the base. The rate of energy flow through each trophic level is shown by the breadth of each step.The sun provides energy to the food chain in an ecosystem when plants use sunlight to produce food. The energy is then transferred from one trophic level to the next. Energy is lost at each trophic level. Only 10% of the energy from one trophic level is transferred to the next. The remaining energy is dissipated as heat. Heat energy cannot be recovered by plants and does not return to the food chain. As a result, energy flow in an ecosystem is described as unidirectional.
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