Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells in an effort to produce energy, maintain life, or stimulate growth.
Historically, people secured food through two methods: hunting and gathering, and agriculture. Today, most of the food energy consumed by the world population is supplied by the food industry.
Iced tea (or ice tea) is a form of cold tea, usually served in a glass with ice. It may or may not be sweetened. Iced tea is also a popular packaged drink. It can be mixed with flavored syrup, with common flavors including lemon, peach, raspberry, lime, passion fruit, strawberry and cherry. While most iced teas get their flavor from tea leaves (Camellia sinensis), tisanes are also sometimes served cold and referred to as iced tea. Iced tea is sometimes made by a particularly long steeping of tea leaves at lower temperature (one hour in the sun versus 5 minutes at 80-100 °C). Some people call this "sun tea". In addition, sometimes it is also left to stand overnight in the refrigerator.
Science of drugs including their origin, composition, pharmacokinetics,
pharmacodynamics, therapeutic use, and toxicology.
Pharmacology (from Greek φάρμακον, pharmakon, "poison" in classic Greek; "drug" in modern Greek; and -λογία, -logia "study of", "knowledge of") is the branch of medicine and biology concerned with the study of drug action, where a drug can be broadly defined as any man-made, natural, or endogenous (within the body) molecule which exerts a biochemical and/or physiological effect on the cell, tissue, organ, or organism. More specifically, it is the study of the interactions that occur between a living organism and chemicals that affect normal or abnormal biochemical function. If substances have medicinal properties, they are considered pharmaceuticals.
Hospitality is the relationship between the guest and the host, or the act or practice of being hospitable. This includes the reception and entertainment of guests, visitors, or strangers.