Deforestation mean cutting down trees at random. It cause mainly by a group of dishonest people. They cut trees make profit. Ordinary people also use trees as fuel and furniture. Because of cut more and more trees, we are going face a great danger in the coming future. We know that oxygen supply by trees for animals. Without take oxygen, we cannot live a single moment. If trees cut down in this way, the amount of carbon dioxide increase in the atmosphere. As a result, the heat rise. It call greenhouse effect. enjoy a peaceful life, we must plant more and more trees.