History of life on earth

All fossils that have been discovered worlwide

• Geologic Time scale

• Fossil Record

• Extinction

• fossil

Death of every member of a species

• Fossil

• Geologic time scale

• fossil record

• Extinction

Trace of remains of an organism that lived long ago

• Fossil

• Geologic time scale

• fossil record

• extinction

Division of earth's history into manageable parts

• fossil

• geologic time scale

• fossil record

• extinction

It is not part of the precambrian time

• Archaen eon

• Hadean eon

• phanerozoic eon

• protorezoic eon

The atmosphere conditions near the beginning of precambrian time contrast with the atmospheric conditions that are present now, is largely responsible of this organism:

• Ameba

• Cyanobacteria

• E.Coli

• All of them are correct

The extinction of species, both plant and animal, have happened regularly over the course of Earth's history.

• True

• False

HOW OLD IS THE EARTH WE LIVE IN?

• 4,6 billion years old

• 2000 YEARS OLD

• 5 BILLION YEARS OLD

What define the boundaries between geologic time intervals

• Mass Extinction

• significant changes in the number of species

• Changes in earth climate

• All of the are correct

The largest divisions of the geological time scale are

• Eon

• Era

• Epoch

• Periods