Question

Some processes cycle carbon into the atmosphere, some processes remove carbon from the atmosphere and some cycle carbon both into and out of the atmosphere. Drag and drop the following processes into the correct category of cycling carbon into or out of the atmosphere. Some choices may be used more than once or not at all.
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Cycle carbon into the atmosphere Cycle carbon out of the atmosphere

Answer 1

I don't see the list of processes to drag — could you paste the set of choices you were given?

If helpful, here’s a typical sorting of common carbon-cycle processes you can use or adapt:

- Cycle carbon into the atmosphere:
- Cellular respiration (animals, plants, microbes)
- Decomposition of organic matter
- Combustion / burning of fossil fuels and biomass
- Volcanic eruptions
- Ocean outgassing (when seawater releases CO2)

- Cycle carbon out of the atmosphere:
- Photosynthesis by plants, algae, and cyanobacteria
- Dissolution / uptake of CO2 by the oceans (ocean absorption)
- Formation of carbonate minerals (sedimentation / shell formation)
- Chemical weathering of silicate rocks (long-term drawdown)
- Burial / fossilization of organic matter (formation of fossil fuels)

- Cycle carbon both into and out of the atmosphere:
- Soil/plant systems (photosynthesis removes CO2; respiration and decomposition return CO2)
- Ocean–atmosphere gas exchange (can absorb or release CO2 depending on conditions)
- Land-use change (deforestation emits CO2; reforestation removes CO2)

Send the exact choices and I’ll place each one into the correct category.