Trees play an important roll in maintaining ecological balance. They produce oxygen; regulate rainfall and the ratio of oxygen and carbon dioxide in the air. They also supply us with food, drink medicine, clothing, and shelter and so on. Trees supply raw materials for both small and big industries.
Trees play an important roll in maintaining ecological balance. They produce oxygen; regulate rainfall and the ratio of oxygen and carbon dioxide in the air. They also supply us with food, drink medicine, clothing, and shelter and so on. Trees supply raw materials for both small and big industries.