Select the correct answer from each drop-down menu. (drop-down menu)tends to raise CO2 levels in the atmosphere, but
(drop-down menu) tends to lower CO2 levels in the atmosphere.

respiration and photosynthesis maybe as I can't see the options

Explanation:

Cutting down trees instead of growing trees

using clean energy sources instead of fossil fuels.

Explanation: Took the test and I got it correct.

the most logical answer would be a

answer; i believe its (ovulation);