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| A Tree: |
There are different kinds of elements of our environment. Tree is one of them it is very essential to maintain our ecological balance. We live on oxygen. Tree is the only one thing who gives us oxygen. It gives us shade, fruit, flowers, fuel and everything. We can’t live without trees. Trees receive carbon-di-oxide and leave oxygen. Humans receive oxygen and leave carbon-di –oxideand leave oxygen. Humans receive oxygen and leave carbon-di-oxide so, trees are the only substance to absorb carbon-di-oxide. It also prevents from all kinds of natural calamities. Trees are the only element to remove global warming So, a tree is the vital and best element of our environment and human to live in this world. Tree is the best friend of human civilization.