Final answer:
Energy is crucial for the growth, maintenance, and reproduction of organisms. Plants acquire energy through photosynthesis and provide resources for other organisms. Human activity can deplete or destroy forests, impacting free energy availability. Reforestation and conservation efforts can help restore energy levels.
Step-by-step explanation:
Energy is required by all living organisms for their growth, maintenance, and reproduction. Plants acquire energy from the sun through photosynthesis and use this energy to make sugars. Other organisms that depend on plants for their survival would be affected if the plants don't have sufficient sunlight or water. Depletion or destruction of forests by human activity can affect the availability of free energy to organisms living in the rainforest. Measures that can be taken to restore free energy to an acceptable level include reforestation and conservation efforts.