Energy can never be created or destroyed, just or .

Explanation:

First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. ... The First Law of Thermodynamics (Conservation) states that energy is always conserved, it cannot be created or destroyed. In essence, energy can be converted from one form into another.

Energy can be changed from one form to another, but it cannot be created or destroyed

Explanation:

energy is always conserved, it cannot be created or destroyed

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.