The word ‘environment’ refers to the conditions, which is surrounding the ecosystem or the community of living things. What we see,feel. breathe, eat constitutes the environment. The environment supports our lives and the lives of the other species. All living beings need a healthy environment to live a healthy life.
It is the environment that regulates and maintains all biological cycles. Since time immemorial, the growth and evolution of all living forms have taken place with the help of environment.
The food chain, food webs, photosynthesis, greenhouse effect, absorption of UV rays by ozone layer, nitrogen cycle, oxygen cycle etc. are the key environmental processes behind the survival of all species.