That would be the Endoplasmic Reticulum my good friend hope this helped... :D
        
             
        
        
        
The earth's atmosphere consists mainly of nitrogen and oxygen with smaller proportions of other gases such as carbon dioxide. The amount of carbon dioxide in the atmosphere is maintained through a balance between processes such as photosynthesis, respiration and combustion. However this balance is being affected by human activities which are polluting the atmosphere.
The proportion of these gases in the atmosphere is as follows: nitrogen is the most abundant at 78%, oxygen is next at 21%,  while others  include carbon dioxide at 0.037% and argon at 0.9 % .
 
        
             
        
        
        
Answer:
they carry the genetic info in the form of genes
Explanation:
Chromosomes carry the genetic information in the form of genes. They are a threadlike structure of nucleic acids and proteins, and are found in the nucleus of most living cells.
 
        
                    
             
        
        
        
Answer:
C
Explanation:
 They does not carry oxygen to injured areas of tissue