The heart pumps blood through the body to keep it going:)
Answer:
I also dont know biology. sorry
Explanation:
I am at 8th grade
Exosphere is the lowest because the higher you go the lower the air pressure the lower you go the higher the air pressure. ;) :)
One long, single molecule of double stranded, helical, supercoiled DNA. In most bacteria, the two ends of the double-stranded DNA covalently bond together to form both a physical and genetic circle
