I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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THe base of the pyramid is built from organisms that primarily
A) are autotrophs.
DNA Fingerprinting is a way to find a specific individual. It is more specific than simply identifying a specie or a particular trait. It is a sort of personal identifier. DNA uses micro satellite to make to make identification much easier. DNA fingerprinting is prevalent in the world of criminal forensic.
Because their bodies tell them that they need more oxygen and so breathe faster, and try and get the oxygen their body requires and depends on.
