W&C - Amazon Rainforest

Question 1

In a typical year, the Amazon rainforest
absorbs . billion tons of CO2 making it
a major carbon sink.

Answer 1

In a typical year, the Amazon rainforest
absorbs 2.2 billion tons of CO2 making it
a major carbon sink.

Question 2

The Amazon Basin stores ___=____ (__%)
of all the carbon in the Earth’s biosphere

Answer 2

The Amazon Basin stores one-fifth (20%)
of all the carbon in the Earth’s biosphere

Question 3

Approximately __% of rainfall is used by plants
and trees, returning to the atmosphere as evapotranspiration

Answer 3

Approximately 50% of rainfall is used by plants
and trees, returning to the atmosphere as evapotranspiration

Question 4

Half the world’s rainforests have been lost due to:

1.
2.
3.
4.

Answer 4

Half the world’s rainforests have been lost due to:

1. Commercial Farming
   2.Mining
2. Logging
3. Urbanisation

Question 5

The Amazon Basin has lost __% of its forest in the last 50
years

Answer 5

The Amazon Basin has lost 17% of its forest in the last 50
years

Question 6

Deforestation removes a store of water. River ___________ will
increase locally in the short term due to increased surface run off (no trees to encourage infiltration) and decreased through
flow and ground water flow, leading to flash _______.

Answer 6

Deforestation removes a store of water. River discharge will
increase locally in the short term due to increased surface run
off (no trees to encourage infiltration) and decreased through
flow and ground water flow, leading to flash floods.

Question 7

Increased atmospheric CO2 due to _______________ (human) causes makes trees more productive and _________
(absorb) more CO2.

Answer 7

Increased atmospheric CO2 due to anthropogenic (human) causes makes trees more productive and sequester
(absorb) more CO2.

Question 8

When rainforests are burned for land clearance (slash and burn), __ to __% of the carbon is immediately released into the atmosphere in the form of carbon dioxide.

Answer 8

When rainforests are burned for land clearance (slash and burn), 30 to 60% of the carbon is immediately released into the atmosphere in the form of carbon dioxide.