The Carbon Cycle: Changes Over Time Human Impacts

Question 1

what are the three human practices which impacts the carbon cycle?

Answer 1

fossil fuel use
deforestation
farming practices

Question 2

how does fossil fuels use effect the carbon cycle?

Answer 2

combustion transfers the carbon from a long term sink of the lithosphere to the atmosphere

Question 3

how does farming practices effect the carbon cycle?

Answer 3

pastoral farming - animals respiring releases co2

ploughing - releases co2 from the soil

farm machinery - releases co2

Question 4

how does deforestation effect the carbon cycle?

Answer 4

land is cleared using the slash and burn interrupting the forest carbon cycle, and rapidly releases the carbon stored in the plants

Question 5

what is the carbon budget?

Answer 5

balance between the inputs and outputs of carbon

Question 6

what is a carbon sink?

Answer 6

a store that absorbs more carbon than it emits

Question 7

what is a carbon source?

Answer 7

a store that emits more carbon than it absorbs