Answer:
A) diploid cells contain two sets of chromosomes
Answer:
A galaxy is a collection of millions of stars, while a solar system is a star and the planets around it.
Explanation:
You live in a solar system, we revolve around our sun and so do the other planets making up a solar system
Smooth muscle cells are found in the walls of hollow organs
I don't know if this helps or not but you would want to know the age of the rock (absolute dating) and from there you will be able to know the age of the fossil and what caused it to die.