However, seawalls are costly to build and need constant maintenance. ... One of the natural causes of climate change is variations in solar output. The sun emits varying amounts of solar radiation due to changes in its magnetic field. ... However, it cannot be the only reason as the cycle of more solar activity lasts 11 years. ... Together with ash and dust, these particles reflect solar energy back into space. ...
Global Warming Climate change is a part of the Earth's history. Global warming is a theory that has been associated with a rise in the global average temperature. Scientists argue whether global warming is a serious issue or just a waste of time. Not knowing what to think or what to believe make...
Global Warming and the greenhouse effect are words that have been discussed in great detail constantly for the past twenty years. ... "Greenhouse effect is the effect produced as greenhouse gases allow incoming solar radiation to pass through the Earth's atmosphere, but prevent part of the outgoing infrared radiation from the Earth's surface and lower atmosphere from escaping into outer space- (EPA Global Warming Site). ...
