Nature and Environment

________ is everything in the world around us that surround and affects all life on earth, including the air, food, water, plants, animals and other.

Environment is the place where we live. Since ancient time_______ has served man, being the source of his life

Unfortunately, man's interference in nature began to increase with the development of civilization. Our _____ becomes worse and worse with every new day.

People destruct wildlife, cut down trees to make furniture. They forget that people can't live without trees and plants, because they fill air with .______.

 Man's interference in nature began to increase with the development of _______

Many ______ of animals and birds are disappearing nowadays.

Air pollution influences the health of people. For example: ______ from the sun can cause skin cancer.

Normally the ______ in the atmosphere protects us from such radiation, but if there are holes in it through which ultraviolet radiation can get to the earth.

One of the most serious problems is _______. It works like this: sunlight gives us heat. Some of the heat warms the atmosphere and some of the heat goes back into space. Nowadays the heat can't go into space. That's why winter and summer temperatures in many places have become higher

______ is a very serious problem. In Cairo just breathing the air is life threatening- equivalent to smoking two packs of cigarettes a day.