Water or sunlight Our bodies made 90% of water and the sunlight give u Nutrients
        
             
        
        
        
Answer:
cellular respiration and photosynthesis work together by taking in energy such as the sun, or Co2 to convert that into energy and oxygen right back into the atmosphere.
Explanation:
 
        
             
        
        
        
Cellular respiration
Explanation:
The energy animals need for their life functions are released when their cells carry out cellular respiration. 
Cellular respiration is a metabolic process by which living organisms breaks down organic molecules using oxygen  especially glucose to produce energy and gives off carbon dioxide and water in the process. 
It is the reverse of photosynthesis. 
During this process, chemical energy stored in food substances are released and converted to heat energy. 
The process takes place in the mitochondria of a cell. 
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Respiration brainly.com/question/5895241
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Answer: An exoskeleton is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton of, for example, a human. i think its B
Explanation: hope this helps!