Lead<span> affects many different biologic activities at the cellular and molecular levels, many of which may be related to its ability to go against</span><span> the functions of calcium.</span>
<h3><u>Answer;</u></h3>
12 (per 1000 people)
<h3><u>Explanation;</u></h3>
Birth rate in India in 2011 = 21 (per 1000 people)
Death rate in India in 2011 = 9 (per 1000 people)
Growth rate = Birth rate - Death rate
21(per 1000 people) - 9 (per 1000 people)= 12(per 1000 people)
This means there will be a growth rate with a magnitude of 12 per 1000 people.
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A child inherits 23 pairs of chromosomes from his/her mother, and 23 pairs of chromosomes from his/her father.
The <span>respiratory system that is correctly paired with its function is the first option: </span><span>Alveoli contract and relax to fill and empty the lungs</span>.
Alveoli<span> are tiny air sacs within our lungs which allow oxygen (O) and carbon dioxide (CO2) to move between the lungs and the bloodstream.
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