Some processes cycle carbon into the atmosphere, some processes remove carbon from the atmosphere and some cycle carbon

Question

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. (2 points)

Cycle carbon into the atmosphere

Cycle carbon out of the atmosphere

# respiration

:: burning fossil fuels

#: equilibrium with the ocean

:: limestone formation

# photosynthesis

Answer 1

Here’s how the processes can be categorized:

Cycle carbon into the atmosphere:

• respiration
• burning fossil fuels
• equilibrium with the ocean (as it can release CO2 back into the atmosphere)

Cycle carbon out of the atmosphere:

• photosynthesis
• limestone formation (as it sequesters carbon)

Some processes may have complex roles, but this categorization fits their primary functions in the carbon cycle.