Question

why are the Forest called the lungs of the planet?

Answer 1

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Tropical rainforests are often called the “lungs of the planet” because they generally draw in carbon dioxide and breathe out oxygen.

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Answer 2

lungs in human body. when we inhale the oxygen through nostrils they are transported to the whole body via lungs for proper functioning of cells.Similarly forests helps water to transport to the earth's ground for proper structure and environmental system in deep earth

Moreover, The equatorial rain forest or commonly know as Amazon rain forest functions as a giant air machine that absorbs a large amount of carbon dioxide, and produces oxygen. That is why it is often called the "Lungs of the Earth."