- The earth 's atmosphere is made of 78 percent nitrogen by volume
- The earth's atmosphere is made of 04% to 1% of water vapor by volume
- The earth 's atmosphere is made of 21 percent oxygen by volume
- The earth 's atmosphere is made of 036 percent carbon dioxide by volume
- So, earth's atmosphere is made of nitrogen, oxygen, water vapor, and carbon dioxide

Hence, earth's atmosphere is made of nitrogen, oxygen, water vapor, and carbon dioxide
Q: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?
Context:
- The earth 's atmosphere is made of 78 percent nitrogen by volume 
- The earth's atmosphere is made of 04% to 1% of water vapor by volume 
- The earth 's atmosphere is made of 21 percent oxygen by volume 
- The earth 's atmosphere is made of 036 percent carbon dioxide by volume