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Biotics describe living or once living components of a community; for example organisms, such as animals and plants. Biotic may refer to: . Life, the condition of living organisms
The following outline is provided as an overview of and topical guide to life forms: . A life form (also spelled life-form or lifeform) is an entity that is living, [1] [2] such as plants (), animals (), and fungi ().
An ecosystem (or ecological system) is a system formed by organisms in interaction with their environment. [2]: 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows.
The Gaia hypothesis (/ ˈ ɡ aɪ. ə /), also known as the Gaia theory, Gaia paradigm, or the Gaia principle, proposes that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating complex system that helps to maintain and perpetuate the conditions for life on the planet.
This stream operating together with its environment can be thought of as forming a river ecosystem. River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.
The capybara [a] or greater capybara (Hydrochoerus hydrochaeris) is the largest living rodent, [2] native to South America.It is a member of the genus Hydrochoerus.The only other extant member is the lesser capybara (Hydrochoerus isthmius).
Tropocollagen molecule: three left-handed procollagens (red, green, blue) join to form a right-handed triple helical tropocollagen. Collagen (/ ˈ k ɒ l ə dʒ ə n /) is the main structural protein in the extracellular matrix of the connective tissues of many animals.
General characteristics of a large marine ecosystem (Gulf of Alaska) Killer whales (orcas) are highly visible marine apex predators that hunt many large species. But most biological activity in the ocean takes place with microscopic marine organisms that cannot be seen individually with the naked eye, such as marine bacteria and phytoplankton.