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If gravity were slowing down the expansion of the universe, how would very distant galaxies differ from nearby galaxies?
Fight-or-flight Response
A physiological reaction to perceived harm or threat, mobilizing the body for fighting or fleeing.
Social Evolution
The gradual development and progression of societies and cultures over time through mechanisms such as adaptation, selection, and innovation.
Biological Evolution
The process through which species of organisms undergo changes over time through genetic variation and natural selection.
Physiological Response
A natural, automatic bodily reaction to stimuli, which can include changes in heart rate, hormone levels, or muscle tension.
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