After reading this chapter, you will be able to:

Life is known to exist only on one planet till date – i.e. on Earth. A very huge diversity of organisms is being found on this planet and it is house to a large number of elements, minerals and natural resources. However, nowadays it is becoming more difficult for livings beings to survive on earth as most species have been showing a steep decline in survival rate. Moreover, the diversity of flora and fauna is also reducing due to unfavourable living conditions on earth. The primary reason behind the deteriorating conditions for living beings on earth can be owed to harmful anthropogenic activities that have been carried in the earth's atmosphere.

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