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General nature or nature terms.

Industrie : Environnement naturel

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ions bicarbonate

Biologie; Général

Une base faible présente dans la salive qui aide à neutraliser l'acidité dans les aliments.

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, ...

symétrie bilatérale

Biologie; Général

In animals, refers to those that have a single axis of symmetry."

système biliaire

Biologie; Général

The bile-producing system consisting of the liver, gallbladder, and associated ducts."

fission binaire

Biologie; Général

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."

système binominal de la nomenclature

Biologie; Général

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."

cycle biochimique

Biologie; Général

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."