What causes global warming?
Scientists believe that global warming is caused by an increase in the concentration of greenhouse gases within our atmosphere. It is well known that we have drastically altered the composition our atmosphere – we have increased the carbon dioxide level by 30% and increased the methane level by more than 200% from pre-industrial revolution levels (See the EPA website.) These increases are thought to be largely due to human effects — burning fossil fuels, decreasing vegetation (a natural reservoir for carbon) and landfills all release significant amounts of greenhouse gases. More greenhouse gases results in a strong greenhouse effect and a warmer planet.
Many things cause global warming. One thing that causes global warming is electrical pollution. Electricity causes pollution in many ways, some worse than others. In most cases, fossil fuels are burned to create electricity. Fossil fuels are made of dead plants and animals. Some examples of fossil fuels are oil and petroleum. Many pollutants (chemicals that pollute the air, water, and land) are sent into the air when fossil fuels are burned. Some of these chemicals are called greenhouse gasses. We use these sources of energy much more than the sources that give off less pollution. Petroleum, one of the sources of energy, is used a lot. It is used for transportation, making electricity, and making many other things. Although this source of energy gives off a lot of pollution, it is used for 38% of the United States energy.
Global Warming is a major issue due to the industrialization and progress by humankind since the past few years. There has been a hue and cry about Global Warming ever since the idea was first put forward. There are many articles on Global Warming on the internet as well print media which give further details about the causes of Global Warming. Here is some further information on global warming. Global warming has been and is being caused due to a various number of factors. Global warming is basically a change in the climatic conditions of the earth. These climatic conditions vary due to various reason, external and internal. Changes to climatic conditions and therefore Global Warming can be caused to to natural or man-made circumstances also. Some of the factors causing global warming are volcanic emissions and solar activity. According to the solar variation theory,the sun has been gaining strength and is at it’s strongest since a sixty years. Therefore, it may now be acting as a cau
Global warming refers to an increase in the earth’s temperature which is believed to be caused in part by the greenhouse effect or the excessive releases of gasses such as carbon dioxide, methane and nitrous oxides as well as the depletion of the ozone layer which is mainly the result of chlorofluorocarbons and halocarbons that are released into the atmosphere. Many people believe that global warming is largely due to the effects of human activities, especially industry and agriculture. However, while human activity is very likely a big contributing factor, we are not the sole cause of global warming. In addition, the issue of rising global temperatures is not an exact science. Scientists believe that over the last 400,000 years, there have been four almost identical weather cycles, lasting a little over 100,000 years each. During each cycle it was cold for almost 100,000 years. Then there was a much warmer period lasting 10 to 20 thousand years with average temperatures comparable to
