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List of biology websites. This is an annotated list of biological websites, including only notable websites dealing with biology generally and those with a more specific focus. Ask A Biologist - has been hosted by ASU School of Life Sciences since 1997. The website contains a large collection of free content, including images, stories, games ...
Biology is the scientific study of life. [ 1 ] [ 2 ] [ 3 ] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. [ 1 ] [ 2 ] [ 3 ] For instance, all organisms are made up of cells that process hereditary information encoded in genes , which can be transmitted to future ...
The food web is a simplified illustration of the various methods of feeding that link an ecosystem into a unified system of exchange. There are different kinds of consumer–resource interactions that can be roughly divided into herbivory, carnivory, scavenging, and parasitism.
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.
An ecosystem (or ecological system) consists of all the organisms and the abiotic pools (or physical environment) with which they interact. [3][4]: 5 [2]: 458 The biotic and abiotic componentsare linked together through nutrient cycles and energy flows. [5] "Ecosystem processes" are the transfers of energy and materials from one pool to another.
The black walnut secretes a chemical from its roots that harms neighboring plants, an example of competitive antagonism. In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other. They can be either of the same species (intraspecific interactions), or of different species ...
Halophiles, organisms that thrive in highly salty environments, and hyperthermophiles, organisms that thrive in extremely hot environments, are examples of Archaea. [1] Archaea evolved many cell sizes, but all are relatively small. Their size ranges from 0.1 μm to 15 μm diameter and up to 200 μm long.
Organism. An organism is defined in a medical dictionary as any living thing that functions as an individual. [ 1 ] Such a definition raises more problems than it solves, not least because the concept of an individual is also difficult. Many criteria, few of them widely accepted, have been proposed to define what an organism is.