The answer is C because plants use photosynthesis and animals use cellular respiration, so they balance each other out.
        
             
        
        
        
<span>The type of scale that George would have used is called a Gravimeter. It is the measurement of the strength of a gravitational field</span>.
        
             
        
        
        
This theory was first proposed by Nicolaus Copernicus<span>. </span>Copernicus<span> was a Polish </span>astronomer<span>. He first published the heliocentric system in his book: De revolutionibus orbium coelestium , "On the revolutions of the heavenly bodies," which appeared in 1543.</span>
        
             
        
        
        
Answer:
Active Transport, A, Osmosis
Explanation:
 
        
             
        
        
        
<span>keeping their stomata open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water. Leaves take in carbon dioxide and give off oxygen during photosynthesis.</span>