Most forest fires and wildfires are natural. They clear away debris, old brush, and dying trees, leaving heartier trees better able to grow. Certain trees, in fact, produce seeds only when fire heats them. If the fire removes thick shrubs and undergrowth, the water supply increases, aiding other plants and local animals. Fire also may kill predatory insects or pests that live on and damage otherwise healthy trees. Write two sentences in which you identify the main idea and at least one supporting detail of this paragraph. (i don't want the answer i just want the main idea)

The correct answer to this open question is the following.

The two sentences in which you identify the main idea would be these.

Mother nature is so smart that she knows how to constantly rebuilt and regenerate itself. To the human eyes, a fire hurts so much. We think that fires destroy nature. But as in the case of fires or heavy rains, the purpose is to clean what must be cleaned.

Maybe this comparison would help. It is like us, the humans. We often need to clean ourselves by having showers. Once in a while, a flue, a minor stomach pain helps us to remove energies that don't serve us.

It is exactly the same as mother nature. Once in a while, she needs fires, hurricanes, strong winds, heavy rains, or earthquakes to remove bad energy.

The supporting detail of this paragraph would be "Fire also may kill predatory insects or pests that live on and damage otherwise healthy trees."