Cause of global warming

The bulk of the world's scientific community is in agreement that our planet is becoming warmer and that one of the main factors of global warming is human activity. Scientists agree that the release of gases that prevent the dissipation of ground heat into space – a phenomenon known as the greenhouse effect – is responsible. The gases primarily responsible for global warming include water vapor, carbon dioxide, methane, nitrous oxide and chlorofluorocarbons (CFCs). Humans produce them by burning fossil fuels and engaging in various agricultural and industrial activities. The Earth itself also contributes with natural processes that create greenhouse gases and accelerate the warming trend. Although carbon dioxide receives the most press as the culprit responsible for global warming, water vapor is actually the most abundant greenhouse gas in the atmosphere. Carbon dioxide still deserves its notoriety, however. It may be a minor component of the atmosphere, but its increased abundance is contributing to the warming trend, according to NASA. Humans exacerbate the problem by cutting trees that absorb this gas and by adding other greenhouse gases to the mixture over and above those that enter through natural processes. In addition, one of the global warming causes might be astronomical. Cause #1: Variations in the Sun's Intensity The Earth receives its warmth from the sun, so it's reasonable to suspect that our home star may be one of the reasons for global warming. Although t...