Examlex
An electron is moving with the speed of 1780 m/s.What is its de Broglie wavelength? (melectron = 9.11 × 10-31 kg,h = 6.626 × 10-34 J ∙ s)
Proximate Cause
An immediate, underlying cause based on the operation of biological mechanisms within an organism.
Ultimate Cause
A term referring to the evolutionary explanations for why a biological trait or behavior occurs, focusing on survival and reproductive advantages.
Graylag Goose
A species of large grey goose, native to Europe and Asia, known for its significant role in studies of animal behavior, especially imprinting.
Sign Stimulus
A specific external sensory stimulus that triggers a fixed action pattern in an animal.
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