A flush toilet, also known as a flush lavatory or water closet, is a plumbing fixture used for the disposal of human waste.

Hygiene is the practice of maintaining cleanliness and promoting good health.

Improved sanitation (related to but distinct from a "safely managed sanitation service") is a term used to categorize types of sanitation for monitoring purposes.

Summary: The Wikipedia page on nutrition provides an overview of the topic, covering various aspects related to human dietary needs and health.

Personal protective equipment (PPE) refers to protective clothing, equipment, or gear designed to protect individuals from hazards or risks in their workplace or environment.

Public health refers to the science and art of preventing disease, prolonging life, and promoting health through organized efforts and informed choices of society, organizations, public and private communities, and individuals.

Renewable energy refers to energy sources that are replenished naturally and can be used without depletion.