Green house affect

• The atmosphere is a layer of gases that surrounds the earth and protects it from the sun's heat
• the atmosphere is mostly nitrogen (78%)
• green house effect is necessary for earths life
• the green house affect keeps the earths temperature at an average of 15 degrees
• radiation from the sun gets trapped in earths atmosphere and is reflected back towards earth, this makes the earth warmer
• the second most common gas in the atmosphere is oxygen (21%)
• there is also argon (1%) and carbon dioxide (0.038%) in the atmosphere
• the waste product of respiration is carbon dioxide
• human activity produces the green house gasses carbon dioxide and methane
• on of the main greenhouse gasses is water vapour
• carbon foot print is the total amount of carbon dioxide and other greenhouse gasses emitted over the full life cycle of a product, service or event
• the rising sea levels are due to melting ice caps and warmer ocean expanding