Explain step by step or in simple terms how does the body regulate water

The kidneys can regulate water levels in the body; they conserve water if you are dehydrated, and they can make urine more dilute to expel excess water if necessary. Water is lost through the skin through evaporation from the skin surface without overt sweating and from air expelled from the lungs.

Electromagnetic force

Explanation:

The nucleus in positively charged and electrons are negatively charged. Opposite charges attract each other.