factors driving the magnitude of stores

Question 1

net carbon sink=

Answer 1

if more carbon enters a store the leaves it

Question 2

geographical component=

Answer 2

where carbon interacts with the rock cycle

Question 3

photosynthesis

Answer 3

living organisms convert co2 into oxygen co2 +h2o–o2+glucose

Question 4

respiration

Answer 4

plants and photosynthetic algae use the stored carbohydrates as an energy source to carry out their life functions by respiration which convert oxygen and glucose into energy which produces water and co2

Question 5

combustion

Answer 5

when fossil fuels and organic matter like trees are burnt they emit co2 into the atmosphere which was previously locked away

Question 6

decomposition

Answer 6

when living organisms die they are broken down by decomposers which respire. also during decomposition carbon from their bodies is returned to the atmosphere as co2

Question 7

weathering

Answer 7

• rocks are eroded by carbonation weathering

- it occurs when co2 in the air mixes with rainwater to create carbonic acid

Question 8

burial and compaction

Answer 8

when organic matter is buried it becomes compact

• over millions of years it can form coil and oil (hydrocarbons)
• corals and shellfish use carbon to build their shells so when they die, the carbon dissolves and is released- the rest compacts to form limestone

Question 9

carbon sequestration

Answer 9

its the transfer of carbon from the atmosphere to other stores which can be natural or artificial

• a plant, sequesters carbon when it photosynthesises and stores carbon
• factories use carbon capture and storage when co2 is captured and transported to empty gas fields and aquifers