Like 50 miles for the outermost layer which is called the LITHOSPHERE
Answer:
Leucocytes
Explanation:
Also known as white blood cells.
The question already indicated that the right answer is. I wonder why it's still posted.
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.
Answer:
23 Chromsomes
Explanation
Thus, if a skin cell or somatic cell contains 46 chromosomes then the egg or sperm (gametes) would contain only 23 chromosomes
