Answer:
A pure substance has a definite chemical composition
Answer:
Not being able to adapt to their surroundings
Explanation:
For example, a population living in a cold climate and wears little to no clothes will give them frost bite. And so the nature of needing to adapt is core to survival.
The answer is C Becuz D is a compound and that is the only answer that says it
Answer:
5 million million atoms can fit at the end of a needle
