This climate is warm. 
The animals in the tundra are strong to live in such an environment. 
I don't know what the rest of that stuff is sorry. 
        
             
        
        
        
The spinal cord is the answer
        
             
        
        
        
Answer:
it increases oxygen levels and decrease carbon dioxide levels
 
        
             
        
        
        
Answer:
Protist
Explanation:
Protist are prokaryotic organisms