The electron is.
The electron is the subatomic particle most famous for characteristic behaviors observed in the context of chemical bonding.
The correct answer is Mitosis !! B !!
Mitosis did not do DNA varriations !!
Answer: Possession of Valves
Explanation: Veins possess valves which ensures that blood flows in only one direction. Valves helps blood to flow back to the heart against gravitational force.
Arteries don't have valves because the pressure originating from the heart is capable of causing the blood to flow in one direction.
<span>Protein is made up of building blocks called amino acids</span>
