Eccentricity is the ratio of the distance from the center of an ellipse to one of its foci to the distance from the center of the ellipse to one of its vertices. 
        
             
        
        
        
<span>rift valley is formed on a divergent plate boundary, a crustal extension, a spreading apart of the surface, which is subsequently further deepened by the forces of erosion. 
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Answer:
Carbohydrates are used for energy (glucose)
Explanation:
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1. Why hydrosphere is important for the living organisms?
2. Why atmosphere is important for the living organisms?
3. Why lithosphere is important for the living organisms?
4. Why biosphere is important for the living organisms?
These are the four questions related to the subsystem of the earth. There are four subsystem of the earth named "lithosphere" which means the land, "hydrosphere" which means water, "biosphere" which means living things and "atmosphere" which means air. 
All these subsystems are important for the survival of living creatures on the planet earth because all living organisms depends on these four subsystem.
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A, because, the entire point of his theory was to prove that changes don't happen spotaneously!