1.b Inputs and Outputs (water and carbon)

Question 1

Amount of water moved globally a year

Answer 1

505,000km cubed

Question 2

Slow carbon cycle

Answer 2

• locked away for millions of years
• C02 diffuses into the oceans from the atmosphere and is taken up by marine organisms
  -they then die and sink for floor where they become sediments

Question 3

Volcanic activity (synoptic link)

Answer 3

• vent co2 into atmosphere
• increases amount in atmosphere

Question 4

Fast carbon cycle

Answer 4

• between atmosphere, biosphere, oceans
• 10x faster than slow cycle
• phytoplankton play a key role
• decomposition returns co2 back into the atmosphere from biosphere