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A variety of living things serve as models in biological research, such as in genetics, and in drug testing. Until the 19th century, plants yielded most of the medicinal drugs in common use, as described in the 1st century by Dioscorides. Plants are the source of many psychoactive drugs, some such as coca known to have been used for thousands ...
A presentation on information flow in living systems. Living systems are life forms (or, more colloquially known as living things) treated as a system. They are said to be open self-organizing and said to interact with their environment. These systems are maintained by flows of information, energy and matter. Multiple theories of living systems ...
All living things contain two types of large molecule, proteins and nucleic acids, the latter usually both DNA and RNA: these carry the information needed by each species, including the instructions to make each type of protein. The proteins, in turn, serve as the machinery which carries out the many chemical processes of life.
Human uses of birds have, for thousands of years, included both economic uses such as food, and symbolic uses such as art, music, and religion. In terms of economic uses, birds have been hunted for food since Palaeolithic times. They have been captured and bred as poultry to provide meat and eggs since at least the time of ancient Egypt.
Animals feature in many different roles in video games, ranging from background NPCs and basic enemies to the protagonist of a game, as in the 2022 game Stray. [66] Virtual pet video games, such as the Nintendogs series and the mobile game Neko Atsume, are a popular type of game where the player cares for a fictional pet, usually a dog or cat. [67]
Cultural universals in all human societies include expressive forms like art, music, dance, ritual, religion, and technologies like tool usage, cooking, shelter, and clothing. The concept of material culture covers physical expressions such as technology, architecture and art, whereas immaterial culture includes principles of social ...
The maguey was cultivated by the Aztecs for its numerous uses including construction, fibre, hedging and production of the sacred drink pulque. [1] This article contains a list of useful plants, meaning a plant that has been or can be co-opted by humans to fulfill a particular need. Rather than listing all plants on one page, this page instead ...
More broadly, ethnozoology studies the place of animals in human life, spanning topics including using animals for food, whether by hunting or by domestication and farming; animals as pets, in entertainment, and in sport; reports of mythical animals; human attitudes towards animals; [3] medicinal and magic religious uses; [4] and the ...