AP Environmental Science - 1.4 The Carbon Cycle

When a plant takes in CO2 and stores it as glucose, the atmosphere acts as a ____ and the glucose is a _____

• source, sink

• sink, source

• source, source

• sink, reservoir

Which is NOT a long-term reservoir of carbon?

• plants and animals

• fossil fuels

• limestone

Which components of the carbon cycle are out of balance right now?

• fossil fuel creation vs. combustion

• photosynthesis vs. respiration

• exchange between oceans and atmosphere

Identify one process in the diagram that happens quickly and one process that happens slowly.

 

Explain how the rate at which fossil fuels are transferred into the atmosphere, as shown in the diagram, has altered the carbon cycle during the past 250 years.