Question

level 1
q2
processes that add carbon to the atmosphere are called ___ and processes that remove carbon from the atmosphere are called __.
a. sinks, feedbacks
b. feedbacks, sinks
c. sources, sinks
d. sources, feedbacks

Explanation:

To solve this, we recall the definitions in the carbon cycle (or atmospheric carbon processes):

• A "source" is a process that releases (adds) carbon to the atmosphere (e.g., fossil fuel burning).
• A "sink" is a process that absorbs (removes) carbon from the atmosphere (e.g., photosynthesis by plants).
• "Feedbacks" refer to processes that amplify or dampen changes, not directly about adding/removing carbon.

So processes adding carbon are "sources", and those removing are "sinks". Option C matches this.

Answer:

C. Sources, Sinks