Scientists so far haven’t managed to figure that out .
Hydrogen is abundant in the sun.
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but no the answer is spine which can also be called vertebral column so is B
Answer:
<em>Hello There the correct answer A change in the size of a population over a given period of time is that population's The growth rate is the birth rate minus the death rate. Over time, the growth rates of populations change because birth rates and death rates increase or decrease. Growth rates can be positive, negative, or zero.</em>
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