Red blood cells carry oxygen to all cells and carbon dioxide away from all cells. They travel through all the blood vessels of the circulatory system, including the
microscopic capillaries which connect arteries to veins. How does the design of a
human red blood cell fit its function?
The shape or design of a blood cell matches its function by...

Biconcave shape

Explanation:

A red blood cell has what is known as a biconcave shape. Both sides of the cell's surface curve inward like the interior of a sphere. This shape aids in a red blood cell's ability to maneuver through tiny blood vessels to deliver oxygen to organs and tissues.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes