Lower fertility and longer lifespans steadily increased the potential labor force relative to the total population
Answer: these are just options, what is the main question, without it, we cannot determine which option is correct, so please repost the question.
Answer:
Physical change is a temporary change. A chemical change is a permanent change.
Explanation:
A Physical change affects only physical properties i.e. shape, size, etc. Chemical change both physical and chemical properties of the substance including its composition.
Answer:
I think it would be A but it might be B please tell if wrong
