Ocean + Atmosphere

Question 1

Regulates carbon cycle by being a sink

Answer 1

Carbon sink = net gain of carbon

CO2 dissolved in surface ocean, pulled by downwelling currents

Question 2

Regulates carbon cycle through sequestration

Answer 2

Marine biota sequester + take to deep ocean when die so can’t be diffused through surface ocean back to atmosphere

Question 3

Thermohaline circulation

Answer 3

Moves north + cools and absorbs more carbon