Have you ever visited a botanical garden? Well many botanical gardens have Greenhouses where they keep the plants in a warm temperature so they can grow healthy.  Greenhouse Gases help us live comfortably in Earth. Greenhouses gases trap the Sun's warmth by not allowing natural gases to escape. The problem is that humans are burning more fossil fuels than ever before and are cutting down thousands of trees causing more and more greenhouse gases. The more gases that there are, the more the earth heats up.  We are adding more to the natural greenhouse gases, and as result the earth is getting hotter and the ice in Antarctica is melting. The climate is changing and is causing harm in animals and plants habitats.  Usually the average temperatures on earth increases and decreases, but in the past decades the earth's temperatures are rising. Some scientist believe that this is happening because we are using more gas, oil, coal, methane.

Greenhouses	Botanists in cool climates use greenhouses to grow plants. Greenhouses helps the heat to stay in and not to escape. The greenhouses are made by using a clear covering in order to allow visible light to come in.
Normal Greenhouses Gasses	The earth also has a transparent covering layer that allows the sun's rays to come in and heat the earth and stay warm. Think of this layer as a transparent blanket covering a ball. We need greenhouses gases to keep the earth in a conformable temperature and not reach temperatures below zero.
The Greenhouse Effect	The greenhouse effect has increased since the Industrial Revolution.  Humans are burning more fossil fuels and are using more gases like carbon dioxide, methane and nitrous oxide more than ever. These activities are causing the earth to warm up and, as a result, global warming is happening.

* The above picture was illustrated by Katherine in Kidspiration 2. *