Global warming and climate change speech
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climate change also called global warming referred to the rise in average surface temperature on earth and over whelming scientific consensus maintains that climate change is due primarily to the human use of fossil fuel which release carbon dioxide and other greenhouse gases into the air. the gases trap heat within the atmosphere which can have a range of effect on ecosystem including rising sea levels server weather events and droughts that tree sandal landscape more respectable to wildfires.
Is climate change real?
there is broad based agreement within the scientific community that climate change is real the US environmental protection agency the national aeronautics and space administration and the national ocean and atmospheric administration concur that climate change is needed according and is almost certainly due to human activity.
what are the causes of climate change?
the primary cause of climate change is the burning of fossil fuels such as oil and coil with greenhouse gases into the atmosphere primarily carbon dioxide other human activities such as agriculture and deforestation also contribute to the proliferation of greenhouse gases that cause climate change.
while some quantities of these gases are a naturally occurring and critical part of Earth's temperature control system the atmospheric concentration of co2 did not rise above 300 parts per million between the advent of human Civilization roughly ten thousand years ago and 1900 today it is about 400 PPM a level not reached in more than $400,000 years.
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