Answer:
Option A.
Explanation:
Air pressure decreases with increasing altitude.
The red blood cell does not have a nucleus. The lack of nucleus enables the rbc to have more room to contain hemoglobin which increases it's efficiency to carrying oxygen
The length would be 6 cm because it’s a cube so all the sides must be equal
Six to the third power is 216 so that would be the volume
DNA Replication is the process of making many copies of DNA. If it helped please mark as the brainliest answer