the word ecology is named by a german biologist in 1898.the work comes from the greek word oikos.oikos means can be thought of the study of natures house keeping.ecology is the fundamental concept of funtional ecology and looks at how men , animals , plants and other living things survive together.

human functions and operations sometimes disturbs the eco system.human intervention produces changes in eco system and as a result it becomes imbalanced.

there are many measures that can be taken to maintain the ecological balance.they are  :
1. we should avoid cutting trees.
2. we should reduce the emission of carbon dioxide and other harmful gases.
3. we should take steps against water , air and land pollution.
these are some of the steps to name just a few.