Answer: Winter shadows are long because sunlight is spread out. The Sun appears low in the sky even at noon. Summer shadows are short because the light is concentrated in a small area.
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Animals that use echolocation. Bats, whales, dolphins, a few birds like the nocturnal oilbird and some swiftlets, some shrews and the similar tenrec from Madagascar are all known to echolocate.
 
        
             
        
        
        
Mitochondria convert the energy in the bonds of glucose and oxygen to readily available energy in the form of ATP (Adinoshin Tri Phosphate) with the help of oxygen. Mitochondria are often referred to as the powerhouse of cell.
        
             
        
        
        
Answer:
True, True, True
Explanation:
Not exactly sure what you are asking, but I'm guessing you want confirmation.