Species have similar characteristics, but they are rarely, if not never, identical; the difference between them is variation!
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Answer:
the shaft and the bone marrow
Explanation:
A hard outer layer called cortical (compact) bone, which is strong, dense and tough. 2. A spongy inner layer called trabecular (cancellous) bone. This network of trabeculae is lighter and less dense than compact bone.
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the wavelength of infrared is larger than the ultraviolet and all frequency is smaller.
Living because it consumes air and water