First came into existence about 385 million years ago trees have played a key role in existence of life in this planet. With an estimated 100000 species they are foun ...
There are many different types of animals in the world. Many animals are quite similar to each other. Others are quite different. Animals can be classified based on t ...
In the universe we know, there are uncountable numbers of planets. But among these planets, there is only one planet named ‘Earth’. It is unique, full of life and ...
The natural environment is a term that encompasses all living and non-living things occurring naturally on earth. The things which do not occur naturally need spontan ...