Un referat in engleza despre " Manking has no impact on climate change"
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Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of climate change, and has been demonstrated by direct temperature measurementsand by measurements of various effects of the warming.[1][2] The terms global warming and climate change are often used interchangeably.[3] However, speaking more accurately, global warming denotes the mainly human-caused increase in global surface temperatures and its projected continuation,[4] but climate change includes both global warming and its effects, such as changes in precipitation.[5] While there have been prehistoric periods of global warming,[6] many observed changes since the mid-20th century have been unprecedented over decades to millennia.[1][7]