Globel Warmiong

A greenhouse is used to grow plants in places where the weather is very cold. The glass or the plastic walls of the greenhouse allows sunlight to pass through, which heats up the soil which warms the air. The walls trap the warm air and cause the temperature to rise inside the greenhouse. This process is commonly known as the greenhouse effect. The sun provides energy to the earth. The sun drives the earth's temperature, climate, and weather on a daily basis. The earth absorbs some of the energy and releases some of it back into space; however, most of the energy that is being released is taken in by greenhouse gases. The greenhouse gases send energy back to the earth's surface which warms our planet. Without the greenhouse effect, earth would be much colder, and life on earth would not be possible for humans, plants, and animals (Campbell 119).

Water vapor, carbon dioxide, oxygen, and methane are the nature greenhouse gases. Carbon dioxide is the most important gas, for it a raw material in photosynthesis and a waste product of cellular respiration. Before the 1850s, the carbon dioxide level was recorded at 0.03% in the Earth's atmosphere; however, after the Industrial Revolution the carbon dioxide level increased by 27.7% (Campbell 119). Why? During the past centuries humans have added greenhouse gases into the atmosphere. How? Humans burn fossil fuels; such as, coal, natural gas, oil, and gasoline. Those materials are used to power cars, factories, utilities, appliances, ships, aircraft, and etc. Cutting down and burning trees and forests also helps to increase the carbon dioxide level into the atmosphere.

When wood is burned, the carbon inside of the wood is released quickly in the form of carbon dioxide. In addition, when wood decays it also releases its carbon but in a very slow manner (Laurence 14).Methane is a major gas product that is produced when trees, grasslands, and forests are burned. During the 1980s, the methane gas level began to rise 1% a year....