tundra

tundra

Arctic or subarctic regions where tree growth is limited due to low temperatures, the short growing season, and the permanently frozen subsoil. Dominant vegetation consists of grasses, sedges, mosses, lichens, and dwarf shrubs and trees.

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Частина мови: noun
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Галузь/тема: Agriculture
Category: General agriculture
Company: USDA
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bioma tundra

Biology; General

Extensive treeless plain across northern Europe, Asia, and North American between the taiga to the south and the permanent ice to the north. Much of the soil remains frozen in ...

tundra alpina

Agriculture; General agriculture

A tundra that is treeless due to the high altitude and can occur at any latitude.

bioma de tundra

Biology; Cell biology

Extensive treeless plain across northern Europe, Asia, and North American between the taiga to the south and the permanent ice to the north. Much of the soil remains frozen in ...

antihelmínticos

Agriculture; General agriculture

Agents destructive to parasitic worms. They are used therapeutically in the treatment of infestation with parasitic worms of the helminth class, in humans and animal.

antígenos de superficie

Agriculture; General agriculture

Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls.

antígenos de neoplasias

Agriculture; General agriculture

Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumor cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral ...

antígenos de histocompatibilidad

Agriculture; General agriculture

A group of antigens that includes both the major and minor histocompatibility antigens. The former are genetically determined by the major histocompatibility complex. They ...

antígeno nuclear de célula proliferativa

Agriculture; General agriculture

Nuclear antigen with a role in DNA synthesis, DNA repair, and cell cycle progression. PCNA is required for the coordinated synthesis of both leading and lagging strands at the ...