Climate Change
Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions, or in the distribution of weather around the average conditions. The change in climate is the result of changes in many things such as solar radiation, shifting of the plate tectonics, and volcanic eruptions. On the broadest scale, the rate at which energy is received from the sun and the rate at which it is lost to space determine the equilibrium temperature and climate of Earth. This energy is distributed around the globe by winds, ocean currents, and other mechanisms to affect the climates of different regions. Factors that can shape climate are called climate forcing or forcing mechanisms. These include processes such as variations in solar radiation, variations in the Earth's orbit, mountain-building and continental drift and changes in greenhouse gas concentrations. Also part of earth natural climate system is all of the atmosphere. The sun is the giver of most of the heat on earth, but some of it gets reflected off of obstacles on their way to earth surface. After the heat from the sun enters earths atmosphere it may get stuck and trapped, and heating the earth unnaturally. If the earth keeps heating up we could melt the polar ice caps, which would cause the sea level to rise. With the sea level risen it would put many civilizations underwater.