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93 Topic Pages Found in Science and starting with the letter E
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Open Ear

organ of hearing and equilibrium. The human ear consists of outer, middle, and inner parts. The outer ear is the visible portion; it includes the

Open Earthquake

AN EARTHQUAKE IS usually caused by the rupture of a geologic fault, or the seam between two large blocks of land that suddenly move in different


terrestrial, cylindrical segmented worm of the class Oligochaeta. There are 2,200 earthworm species, found all over the world except in arid and

Open Eating disorders
Eating disorders

The term ‘eating disorders’ covers OBESITY , feeding problems in childhood, anorexia nervosa, and bulimia nervosa. The latter two are described here.

Open Ebola

( ēbō'lə ), a member of a family ( Filovidae ) of RNA viruses that cause hemorrhagic fevers. The virus, named for the region in Congo (Kinshasa) where

Open Echidna

( ĭkĭd'nə ) or spiny anteater, animal of the order Monotremata, the egg-laying mammals. A short-legged, grayish brown animal, the echidna is covered

Open Echinodermata

( əkì´´nōdûr'mətə ) [Gr.,=spiny skin], phylum of exclusively marine bottom-dwelling invertebrates having external skeletons of calcareous plates just


an older instrumentation system for indirectly determining ocean floor depth. Echo sounding is based on the principle that water is an excellent

Open Eclipses

( ēklĭps', ĭ– ) [Gr.,=failing], in astronomy, partial or total obscuring of one celestial body by the shadow of another. Best known are the lunar

Open Ecofeminism

FEMINIST ENVIRONMENTALISTS ARGUE that the domination of women by men reflects and reinforces the domination of the environment by society, and that