select the correct answer from each drop - down menu. carbon is an element found in all organic molecules…

select the correct answer from each drop - down menu. carbon is an element found in all organic molecules. during respiration, animals excrete it as a gas known as

select the correct answer from each drop - down menu. carbon is an element found in all organic molecules. during respiration, animals excrete it as a gas known as

Answer

Answer: CO2

Explanation:

Step1: Recall respiration process

Animals take in O2 and release CO2 during respiration.

Step2: Identify carbon - containing gas

Carbon is excreted as CO2 gas during animal respiration.