Examlex
Delta waves occur more than 50 per cent of the time in stage ________ sleep.
Test Evidence
Demonstrable data or documents that support the validity or reliability of a specific hypothesis, theory, or assessment tool.
Optimality Theory
A principle suggesting that organisms behave in ways that maximize their fitness, balancing the costs and benefits of each action.
Flight Expenses
The energy cost associated with flying, which includes the metabolic rate required for maintaining powered flight.
V-Formation
A flight formation often seen in birds, especially migratory species, where individuals position themselves in a V shape to conserve energy and improve aerodynamics.
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