What are some examples of pure carbon?
coal, diamond, graphite
What % of Earth is carbon?
What % of our bodies is carbon?
How does carbon get from the ocean to the atmosphere?
How does carbon get into water?
water plant photosynthesis, absorption from outside air
Where are some places carbon is stored?
plants (wood), sea animal shells, animals/people eating plants, fossil fuels, limestone, chalk
How does carbon stored in fuels and trees reach the atmosphere?
burning wood/fossil fuels, cutting down trees, plant and animal respiration
Why is the carbon cycle off balance?
People are burning so much fossil fuel and cutting down so many trees
What is one of the causes of global warming due to human activity?
increasing the amount of methane and carbon dioxide in the atmosphere
What are the 4 main sectors that increase carbon dioxide in the atmosphere?
agriculture (4%), transportation (22%), buldings (31%), industry (40%)
Where does methane come from?
rotting waste, burping/gas passing cows and other grass eating animals
Extra CO2 in the environment causes oceans to become more______
What evidence is there that humans are contributing to global warming?
the amount of methane and CO2 being released has gone up dramatically and so have world temperatures.
What are "greenhouse gases"?
CO2 and methane--called greenhouse gases because they trap more heat in our atmosphere
How many degrees has the Earth warmed since 1900?
1.37 degrees F (.76 degrees C)
The top 12 years ever recorded include 11 years in this time period
1995 to 2006
How many tons of water are being added to the sea each year due to melting snow and ice?
What is an example of the longer growing season caused by warmer temperatures?
cherry blossoms in Japan bloom 5 days earlier on average than they did 50 years ago
Why are there new birds like robins being spotted in new territories and higher altitudes?
because it is warmer there