The natural environment has been strained by:
a. global social stratification
b. global population growth.
c. global population decline.
d. global innovation.

answer; /// i believe that the correct answer is ; /// renaissance,printing press, age of exploration and protestant reformation;

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.