Answer:
Overlap to some degree...
Explanation:
The three energy systems work co-efficiently to provide body with energy according to the extent of physical activity. Not only these three system work together but the superpose each other to get the cycle keep on going. ATP is the main energy currency made by these systems. When one system produces enough currency, the same currency is again utilized for body as well as for the system to keep on going. These three systems include The Glycolysis, The Immediate Energy Transfer System and The Oxidative System...
 
        
             
        
        
        
Answer:
They make it themselves! Plants are called autotrophs because they can use energy from light to synthesize, or make their own food source. Rather, plants use sunlight, water, and the gases in the air to make glucose, which is a form of sugar that plants need to survive. 
 
        
             
        
        
        
Answer:
it lets the defuse faster, which allowed communication to go by in a quickly manner
Explanation:
 
        
                    
             
        
        
        
Answer:
I am writing this in response to a letter regarding evolution. Evolution is increasingly solid, not shaky. Darwin’s “theory” or explanation was a way of understanding what he had discovered (which did not include genes, chromosomes, DNA or nucleotide bases). Our explanations now include genetics and the commonality of mutation.  
Proofs are solid, not in question by serious scientists. Direct observation is one, which we see in the fact that this year’s flu evolved a little too far from last year’s, so flu shots are less effective this year than we would like them to be.  
Fossils tell the story well: whales with legs, dinosaurs with feathers and Tiktaalik. The latter was found in the Canadian north and is part fish, part amphibian, before there were ever any amphibians. Imperfection is a good proof: think of your useless appendix, the very bad design of your ankles, knees, and back (talk to a chiropractor about that).  You have big toes because they used to be useful thumbs for your grasping feet.
Many other animals and even plants similarly have flaws that show their evolutionary past. Two large human chromosomes reflect the coming together of two chimpanzee chromosomes each.
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