Answer:
Plants take in Carbon Dioxide and filter it releasing oxygen.
 
        
                    
             
        
        
        
The stage is referred to as Mitosis
        
             
        
        
        
The lungs are functioning to take carbon dioxide out of the body. Also known as exhaling.
        
             
        
        
        
<span>New combinations of genes may be produced by </span>immigration, mutation and sexual reproduction. These new combinations are also called variations.
        
                    
             
        
        
        
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Answer:</h2>
The galaxies were classified based on the shape and structure exhibited by them.
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Explanation:</h2>
In the 1920's, the galaxies were classified based upon the shape and structure by famous scientist Edwin Hubble. He did it by a telescope with which he captured various galaxies existing. He ordered (or "arranged") their shapes as winding, banned winding, curved, sporadic, and impossible to miss. This framework was known as the Hubble morphological succession of cosmic system types.  
Hubble noticed that a few universes, similar to the M31-Andromeda Galaxy, showed up as circles and had arms of stars and residue which showed up in a winding example. Like M31, these worlds showed up almost uniform in splendor. Likewise, Hubble saw that in a portion of these sorts of worlds the arms were all the more firmly twisted around the cosmic system. He called these winding systems. Our Galaxy, the Milky Way, is a case of a winding universe.