THE ORIGIN OF MAN

THE ORIGIN OF MAN
7 million years ago

TERTIARY ERA

 in Eastern Africa

important movements of the Earth’s crust

form a deep rift, the Rift Valley

a natural barrier is created

that blocks clouds and wind

THE CLIMATE CHANGES

to the west of the
barrier

the climate remains humid

primates live in trees

to the east of the
barrier

the climate becomes arid

few rains

forests turn into savannas
that is

tall grass and few trees

primates adapt to life on the ground

and evolve into

anthropoid monkeys

 then into
hominids

then into
Homo