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General
General nature or nature terms.
Industry: Natural environment
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General
Bicarbonate ions
Biology; General
A weak base present in saliva that helps to neutralise acids in food.
Big bang theory
Biology; General
A model for the evolution of the universe that holds that all matter and energy in the universe were concentrated in one point, which suddenly exploded. Subsequently, matter condensed to form atoms, ...
Bilateral symmetry
Biology; General
In animals, refers to those that have a single axis of symmetry."
Biliary system
Biology; General
The bile-producing system consisting of the liver, gallbladder, and associated ducts."
Binary fission
Biology; General
The method by which bacteria reproduce. The circular DNA molecule is replicated; then the cell splits into two identical cells, each containing an exact copy of the original cell's DNA."
Binomial system of nomenclature
Biology; General
A system of taxonomy developed by Linnaeus in the early eighteenth century. Each species of plant and animal receives a two-term name; the first term is the genus, and the second is the species."
Biochemical cycle
Biology; General
The flow of an element through the living tissue and physical environment of an ecosystem; e. g., the carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus cycles."
