Amino acids are the building blocks of life
Answer:
Motion is a change in position measured by distance and time. Speed tells us the rate at which an object moves.
Answer:
cells are the smallest unit of life
Explanation:
Mass is what you would measure in kilograms
Answer:
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
Explanation:
