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Atmosphere: the atmosphere of a planet is a layer or a set of layers of gases surrounding the planet or other material body that is held in place by the gravity of that body. The atmosphere will be retained if the gravity is high and the temperature of the atmosphere is low otherwise the atmosphere would blow away.
The global climate is projected to continue to change over this century and beyond. The magnitude of climate change beyond the next few decades depends on the amount of heat trapping gases emitted globally and how sensitive the Earth's climate is to those emissions causing this global warming. Global warming is bad for human health in countless ways. Rising temperatures climbing across the globe cause he ways. Heat waves cause dehydration and heat stroke especially in the elderly, children and the poor. The air quality from global warming causes pollution from burning fossil fuels.