AQA A-Level Geography Water and Carbon Cycles in numbers

What percentage of the water on Earth is fresh water?

• 3%

• 2%

• 5%

• 1%

True or false. There are 300 million trees in the Amazon rainforest.

• True

• False

Answer explanation

300 billion trees not 300 million!

How much carbon is stored in the Amazon rainforest?

• 76 GtC

• 110 GtC

• 132 GtC

• 201 GtC

How much carbon is in the oceans?

• 3170 GtC

• 100,000 GtC

• 40,000 GtC

• 800 GtC

What percentage of water is in the cryosphere (ice)?

• 2.1%

• 1.3%

• 2.4%

• 2.9%

True or false. There is more carbon in the atmosphere than in the biosphere.

• True

• False

Which country has 64% of the Amazon rainforest?

(a)  

What % of rainfall in the Amazon is evaporated or transpired back to the atmosphere?

• 45%

• 48%

• 50%

• 52%

What % of the Amazon rainforest has been lost?

• 10%

• 15%

• 20%

• 25%

How much more carbon is in the atmosphere compared to 1750? (in parts per million)

• 118

• 128

• 138

• 148