Answer: C
Explanation: Earth's atmosphere isn't very dense because it is made of air, which floats. Human beings are denser then air since they are solid, but not as dense as Earth's crust, which is rocky and the densest out of the three.
Answer:
You could have created a mutation in the DNA strand that changed the color or you didn't copy the DNA verbatim.
Explanation:
Answer:
Carbon. Nitrogen, and Oxygen.
Explanation:
Similar to the way a star dies.