QUESTION 2 Five hundred years ago, what proportion of children died before the age of 5?
O 1 in 3
O 1 in 100
1 in 50
O 1 in 1000

1 in 3

Food was limited and disease was likely so they didn’t have a good chance of survival.

The most serious effect of water pollution for humans is A) infectious disease can spread through polluted drinking water {Chorea is a bacterial disease endemic in these situations}.
Thus the proper option shall be the letter A),thanks for asking your question on have a grand day!