mixture of gases that surround it, they are held around the Earth by the effect of gravity. The

atmosphere provides protection to life on Earth, without it the changes in temperature during the

day would be incredible, changes would be in the region of 280C rather than only 10C. As well

as maintaining a temperature that can sustain life the atmosphere protects the planet from harmful

radiation from the sun and provides the gases that we and other living things need to breathe and

feed. Like most natural things it depends on a healthy balance of chemicals so that it can maintain

protection from the sun which it has always given before.

The ozone layer is a very important part of the Earth. It protects the inhabitants of the

Earth from harmful radiation that the sun emits. By absorbing a particular form of ultra-violet

light (UV), UVB the ozone layer protects humans, animals and plants together with certain

UVB can affect people and animals by causing skin cancer or cataracts in the eyes which

cab cause blindness. Apart from the health of inhabitants of the plant UVB can also affect the

across the country have prepared greenhouse gas inventories; and many are actively pursuing

this radiation, so it gradually warms up more than it should, like a greenhouse ( although a

the troposphere, this means that they will present less of a danger to the ozone layer. HCFCs still

it, the average surface temperature would be about 18 degrees Centigrade. Heat from the sun

hydrofluorocarbons (HFCs). Both these chemicals contain hydrogen. This means that they will

make sure their emissions of greenhouse gases stayed at their 1990 levels until the year 2000.

There are two basic approaches to the problem of global warming: limitation and

well the substitutes will have a lesser affect on the environment.

turn off lights when you leave a room, if you have a car, don't use it for short journeys, get your

stratosphere so that they can start to.

surface. This means that they can all contribute to global warming. However the impact of HFCs

fe which can affect both the inhabitants of the planet and cause other

amount of plankton that live near the upper layers of the ocean which exposed to sunlight. An

Some common words found in the essay are:
Chlorofluorocarbons CFCs, Eliminating CFCs, Centigrade Heat, Earth Earth's, Earth Summit, UV UVB, Clinton Administration, Carbon-Dioxide CO2, CFCs CFCs, HCFCs HFCs, global warming, ozone layer, greenhouse gases, climate change, gases atmosphere, greenhouse gases atmosphere, carbon dioxide, amount greenhouse gases, increase global, amount greenhouse, suited applications, infra-red radiation, harmful radiation sun,
Approximate Word count = 1296
Approximate Pages = 5 (250 words per page double spaced)