Earths Ife Support System Facts 1A+B+C

71%

what percentage of earth is covered in water

68%

How much of freshwater is locked in ice and glaciers

80%

% of global energy do fossil fuels source

97%

% of global water oceans are

2%

percentage of water glaciers and ice caps are

99.95%

% of global carbon in carbonate rocks

0.04%

Oceans contain dissolved co2 making up % of global carbon

through slow carbon cycle

10-100 million tonnes of carbon circulated a year

approx 150 million years

carbon residence time in rocks is

10-1000x faster than the slow carbon cycle

Fast carbon cycle circulates

350 years

how long is carbon sequestrated in oceans for

10%

% of atmospheric moisture from transpiration.

wind speed, vegetation, interception storage capacity, tree species

Factors affecting interception rates

0.3 billion tonnes

how much does chemical weathering transfer to atmopshere

10 GT of carbon a year

combustion of fossil fuels contribute

50 GT of carbon a year from atmosphere

Biological pump of carbon sequestration absorbs