The answer is to this question is A
        
             
        
        
        
Answer:
C.  
In general, prokaryotic cells do not have a true nucleus or membrane-bound organelles, whereas eukaryotic cells contain both a nucleus and organelles enclosed by membranes.
Explanation:
 
        
             
        
        
        
Climate change is most commonly measured using the average surface temperature of the planet.
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<span>The sun's
energy is the primary source of energy for all surface phenomena and life
on Earth. Combined with the material of the Earth (including the molecules
held close by the Earth's gravitational force called the atmosphere),
this energy provides for the immense diversity of life forms that are
found on the Earth. We will now look in detail at solar energy and its
interplay with the constituents of the Earth's atmosphere. </span>