What are the science definitions of these Eon
Era
Paleozoic era
Mesozoic era
Cenozoic era
Period
Epoch
Mass Extinction
Land bridge
Geographic isolation

Eon-an indefinite and very long period of time, often a period exaggerated for humorous or rhetorical effect.

Era

Paleozoic-its end was marked by mass extinctions

mesozoic-between cenozoic and paleozoic

cenozoic- most recent era

period-a length of time

epoch-age

mass extinction- a huge die off of animals

landbridge- a strip of land connecting two large land masses

geographic isolation-island

Explanation:

sorry

Explanation:

don't know thisdud