Author Question: Key factors in population increase include changes in A) morbidity and mortality. B) fertility ... (Read 104 times)

jerry coleman · **on:** Jul 12, 2018

Key factors in population increase include changes in

A) morbidity and mortality.
B) fertility and mortality.
C) infrastructure and mortality.
D) income and mortality.

Question 2

A substance that contaminates some aspect of the environment and causes potential harm to living organisms is a

A) chemical.
B) toxin.
C) pathogen.
D) pollutant.