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8th ScienceHARDY

8th Geologic Histoy LESSON 1 VOCABULARY

QuestionAnswer
EON longest unit of geologic time
EPOCH subdivision of a period
ERA subdivision of an eon
EXTINCT separation of a population of organisms from the rest of its species due to a physical barrier.
GEOLOGICAL ISOLATION separation of a population of organisms from the rest of its species due to a physical barrier
LAND BRIDGE stretch of land that connects two continents that were previously separated by water
MASS EXTINCTION dying out of many species on earth within a short period of time
PERIOD subdivision of an era
SCALE series of marks or points at known intervals
Created by: asimien907