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Biology

A natural science concerned with the study of life or living matter in all its forms and phenomena, especially in relation to their origin, growth, reproduction, structure, behaviour and evolution.

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Biology > Ecology

igneous

Biology; Ecology

A rock congealed from molten material beneath (intrusive) or at (extrusive) the Earth's surface. Granite is an intrusive igneous rock.

food web

Biology; Ecology

The interconnection of all food chains in an ecosystem. Food web diagrams emphasize the circular complexity of feeding relationships.

espalier

Biology; Ecology

A plant trained to grow vertically, usually up a fence or trellis. Conserves space, heat for frost-prone areas; enhances productivity.

enterococcus

Biology; Ecology

An anaerobic bacterium with two strains that live in the intestines and others that cause infections to wounds and the urinary tract.

cuspate foreland

Biology; Ecology

A triangular shingle of particles at points located between joined ridge deposits along a coastline. Similar to sand spits, but wider.

zero population growth (ZPG)

Biology; Ecology

When birth rate (plus immigration) equals the death rate (plus emigration), resulting in an ecologically stable number of organisms.

herb spiral

Biology; Ecology

A spiral-shaped planting bed for herbs. It offers a more compact growing space and protects the plants inside it from weeds and wind.