Physical geography

Physical geography

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Physical geography

Detritus food chain

Geography; Physical geography

Model describing the conversion of organic energy in a community or ecosystem into inorganic elements and compounds through decomposition. The organisms involved in this conversion are called ...

Detritus feeder

Geography; Physical geography

A type of detritivore. Detritus feeders acquire the nutrients they need from partially decomposed organic matter found in shed animal tissues, plant litter, dead bodies of plants and animals, and ...

Detritus

Geography; Physical geography

Shed tissues, dead body parts, and waste products of organisms. In most ecosystems, detritus accumulates at the soil surface and other types of surface sediments.

Detrital rock

Geography; Physical geography

Sedimentary rock that is composed of particles transported to their place of deposition by erosional processes. Examples of such rock include sandstone and shale.

Detachment

Geography; Physical geography

One of three distinct processes involved in erosion. This process involves the disengagement of a particle from its surroundings.

Desert pavement

Geography; Physical geography

A veneer of coarse particles left on the ground after the erosion of finer particles by wind.

Deoxyribonucleic acid (DNA)

Geography; Physical geography

Form of nucleic acid that is organised into a double-helix molecule. DNA is used by most organisms to chemically code their genetics and to direct the development and functioning of cells. This ...