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Question 1

As air gets warmer, its capacity to hold moisture (1). Water vapour is a potent (2) as it helps to contain (3) so this is a (4) feedback loop

Answer 1

1 - increases
2 - greenhouse gas
3 - the sun’s energy
4 - positive

Question 2

As the ocean absorbs more CO2, it becomes more (1) which reduces its capacity to (2) CO2, further more restricted by an increase in (3) which is a (4) feedback loop

Answer 2

1 - acidic
2 - absorb
3 - temperature
4 - positive

Question 3

There are very organic, rich soils which at higher latitudes are frozen over by (1) which effectively locks in (2) so when the soil thaws due to (3) gases are released as (4) which is a (5) feedback loop

Answer 3

1 - permafrost 
2 - greenhouse gases
3 - rising temperatures 
4 - methane or CO2 
5 - positive

Question 4

Soils, plants and trees suffer from heat (1) due to rising temperatures potentially (2) release of CO2 which threatens the future of the (3) which is a (4) feedback loop

Answer 4

1 - stress
2 - increasing
3 - Amazon
4 - positive

Question 5

As temperatures increase, the areas in which trees grow will extend (1) to higher (2) and so new trees will absorb CO2, likewise colder regions will experience hotter temperatures which encourages (3) which is a (4) feedback loop

Answer 5

1 - North
2 - Latitudes
3 - Plant growth
4 - Negative

Question 6

A higher albedo will reflect more sunlight e.g. (1) surfaces, global warming is causing ice and snow to melt and so more energy is being (2) which is a (3) feedback loop

Answer 6

1 - sand/ snow
2 - absorbed
3 - positive

Question 7

Increased temperatures means more (1) for cloud cover which reflects (2) and decreases warming therefore this is a (3) feedback loop

Answer 7

1 - EVT
2 - solar radiation
3 - negative