The process of photosynthesis is essential in the oxygen/carbon dioxide cycle. photosynthesis removes—from atmosphere and produce and release — into the atmosphere
a. carbon dioxide, oxygen
b. oxygen carbon dioxide
c. glucose , oxygen

Option A.

Explanation:

In the process of photosynthesis, the plant take in carbon dioxide and release oxygen. All organisms that performs respiration take in oxygen and releases carbon dioxide as a by product while all organism that perform photosynthesis (due to the presence of chlorophyll) take in carbon dioxide and releases oxygen as a by product.

The general chemical equation representing photosynthesis is as follows -

6CO2 + 6 H2O + sunlight > C6H12O6 + 6 O2

Hence, option A is correct

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse