The movement of carbon, in its many forms, between the atmosphere, oceans, biosphere, and geosphere is described by the carbon cycle, Drag the terms to correctly label the inputs and outputs within the carbon cycle. More than one correct solution is possible.
Drop target 1
Drop target 2
Drop target 3
Drop target 4
Inputs
1. Atmosphere - Carbon dioxide (CO2) and methane (CH4) emissions from human activities, volcanic eruptions, and respiration by organisms.
2. Oceans - Absorption of atmospheric CO2 by seawater.
3. Biosphere - Photosynthesis by plants and other primary producers, which convert atmospheric CO2 into organic carbon.
4. Geosphere - Erosion and weathering of rocks, releasing carbon into the atmosphere in the form of CO2.
Outputs
1. Atmosphere - Release of CO2 and CH4 through natural processes like respiration, decomposition, and volcanic activity.
2. Oceans - Release of CO2 from the seawater back into the atmosphere.
3. Biosphere - Release of CO2 through cellular respiration by organisms and decomposition of organic matter.
4. Geosphere - Absorption of atmospheric CO2 through weathering and burial of organic carbon in sediment and rocks.