Carbon Cycle Processes

What process is where living biomass takes in carbon dioxide from the atmosphere?

• Fixation

• Sequestration

Why does atmospheric CO2 vary across the year?

• Seasonal variation in vegetation

• Human emissions are higher in certain months

How much quicker is the flow of carbon in the fast cycle compared to the slow cycle?

• 10 to 100 times faster

• 10 to 1000 times faster

• 10 to 10000 times faster

What plays the predominant role in the fast carbon cycle?

• Living biomass store

• Ocean store

• Sedimentary rock store

• Fossil fuels

How long is carbon typically stored in sedimentary rock?

• 100 million years

• 150 million years

• 200 million years

Why is rain slightly acidic?

• It absorbs atmospheric CO2

• It releases atmospheric CO2

Carbonic acid leads to...

• oxidation

• hydrolysis

• carbonation

What processes are involved in the fast carbon cycle

• Photosynthesis

• Respiration

• Decomposition

• Combustion

What process have human activities affected the most?

• Photosynthesis

• Respiration

• Decomposition

• Combustion

How is carbon released from sedimentary rocks (select 2)?

• Tectonic (volcanic) activity

• Weathering on the surface

• Erosion

• Decomposition