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Which mass extinction is known as The Great Dying?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
What determines when a period starts or ends on the geologic timescale?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
What eon are we currently in?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
Which of the following is not a period on the geologic time scale?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
Which of the following has the categories of the time scale in order from largest to smallest?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
Which period are we currently in?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
When 50% or more of species on Earth go extinct in a short period of time.
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
What are the three eras in order from youngest to oldest?
major changes in life
phanerozoic
mass extinction
eon, era, period, epoch
precambrian
cenozoic, mesozoic, paleozoic
permian
quaternary
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