Answer: its B
Explanation: I answered the same thing.
Copper deficiency is a rare disease that leads to hematological disorders. It is an essential trace element. It is an essential part of some enzymes (c0-factor) that plays role in cellular respiration. Copper is also an anti-oxidant that scavenges free radicals. In case of cellular respiration copper is responsible for electron transfer of oxygen.
It is important to look at birth and death rates while considering population size because they determine the population size
The most massive part of the atom is the NUCLEUS which has a POSITIVE charge.
(That's why we have electrons to balance the charge)
I hope this helps!
