Both trees and human beings are interdependent. One can't survive without another. So, it's necessary to keep a balance between human needs and the environment. We need more space to build new buildings.For the new space we cut down the trees carelessly. But we can maintain a balance by planting a number of trees in any other place where it will remain safe and will not cause impediment. We can cut down the trees when it's necessary for us but we should also replace the number of destroyed trees into a new one.