Question

in addition to the carbon in earth’s atmosphere, carbon is found in other places, including forests, oceans, and earth’s crust. while carbon can move from one part of earth to another, earth’s total amount of carbon does not change significantly from one year to the next.
complete the sentence below.
the amount of carbon in earth’s atmosphere ____ each year, but the total amount of carbon on earth ____ significantly from year to year.
changes... does not change
does not change... does change

Explanation:

The text states that carbon can move from one part of Earth to another. This implies that the amount of carbon in a specific part like the atmosphere can change. However, it also clearly mentions that "Earth's total amount of carbon does not change significantly from one year to the next". So, we match the first blank with a word indicating change (for the atmosphere - a part) and the second blank with a phrase indicating no significant change (for the whole Earth - total).

Answer:

changes... does not change