Movement of mouth and lips
As populations are the smallest unit that actually evolves, it is reasonable to call them the "unit of evolution"
This answer is about animals cell. first the deoxygenated blood goes to heart right side. then the heart pump the deoxygenated to lungs where the concentration of oxygen is higher so lungs make the D ox blood oxygenated and then sent again to heart left side which heart pump to deliever to all parts of body.
short cut= lungs and heart make the blood oxygenated.
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Answer:
the identity of the suspect
Explanation:
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Answer: If the trait is favorable, it will be passed on to offspring over many generations, resulting in a population of darker squirrels.
