What would most likely happen if the carbon dioxide in earths atmosphere were reduced to half

a. earths surface would become cooler.
b. the ozone layer would become thicker.
c. there would not be enough oxygen to breathe
d. earths air pressure would increase dramatically. l

The correct answer is A. Earth's surface would become cooler

Explanation:

Carbon dioxide is one of the most common greenhouse gases, this means this gas absorbs the radiation fo the sun that had entered the atmosphere and then emits it, just allowing part of it to go out. Due to this, carbon dioxide causes a greenhouse effect in which heat is trapped in the atmosphere and this increases the temperature. This implies, if carbon dioxide is reduced to half then the amount of heat on Earth's surface will decrease leading to lower temperatures as more radiation will go out of the atmosphere. Thus, if carbon dioxide were reduced to half the Earth's surface would become cooler.