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3 terms

Intro to Taxonomy

a change through time
slow, steady changes which accumulate over LONG periods of time, fossil records supports this
Punctuated Equilibrium
things stay THE SAME for long periods of time, then some CATASTROPHIC EVENT (fire, flood, volcano, hurricane, tsunami) INTERRUPTS the BALANCE causing the change in what settles in the area in the future (may be same species or different species that settles after the event)