Question

what happens to energy once it is in heat form in environmental systems? it cannot be reused and is lost. it is converted back into light. it can be reused indefinitely. it becomes totally destroyed.

Explanation:

Per the second law of thermodynamics, energy converted to heat in environmental systems becomes dispersed at low quality, making it unavailable for reuse in useful work. Energy cannot be destroyed (first law of thermodynamics), nor can it be indefinitely reused or converted back to light in this context.

Answer:

A. It cannot be reused and is lost.