This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: If it wasnt for the greenhouse effect, the average temp would be below freezing CO2 stays in the atmosphere for over 100 years before it gets absorbed by the oceans If CO2 levels were to fall below the present level, then plants would be in trouble and eventually disappear cause it is a plant fertilizer Americans use of the earths energy Most of our energy comes from fossil fuels Nuclear Power provides 20% of the USs electricity Office building- 2.5 million lbs of CO2 Each American puts 20 tons of CO2 in the air yearly SUV 4400 lbs of CO2, regular car: 2200 The biggest barrier is economic growth for reducing greenhouse gases In the next 20 yrs, the electricity requirements will be increased by 60% in the US You can extract hydrogen from natural gas.but CO2 is emitted....
View Full Document