Mercury has no moons and hardly any atmosphere because of because of this temperatures are about 800 degrees to -300
Answer:
Red blood
Explanation:
The bluish color of veins is only an optical illusion. Blue light does not penetrate as far into tissue as red light. If the blood vessel is sufficiently deep, your eyes see more blue than red reflected light due to the blood's partial absorption of red wavelengths.
Check for a diagram on google images :) they have a lot that you can just trace
Your body can over work yourself and than give out
