gases in earth's atmosphere filter out some radiation from sun by absorbing or reflecting it.
some other radiation passes through easily, like visible light
earth's surface is warmed up by absorbing some radiation
earth also emits some of this back into space
atmosphere acts as an insulating layer
known as greenhouse effect
greenhouse gases are carbon dioxide, methane and water vapour
human activity causing greenhouse gases to increase
these activities include increase in travel, using more energy, releasing more carbon dioxide, deforestation, cattle farming, decaying landfill waste, power stations, etc.
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Global Warming and Climate Change
burning fossil fuels increases carbon dioxide in atmosphere
global temperature risen due to this, as it increases greenhouse effect
scientific consensus that humans are the cause of global warming
due to global warming, many countries suffer droughts
hurricanes forming with the hotter weather
climate change will affect food production as ground too dry to grow on
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