Explanation:
a
they form in the bone marrow
a red blood cell lives for approximately 120 days.
The answer would be C because it is the only answer that gives a scientific answer
Lava that hardens on the surface is called an extrusion. The rock layers below an extrusion are always older than the extrusion. ... There, the magma cools and hardens into a mass of igneous rock called an intrusion. An intrusion is always younger than the rock layers around and beneath it.
Answer:
Mercury, Earth, Saturn, Jupiter, and Sun
