Early Humans McGraw Hill Ch. 1 Lesson 1

Front

The first apes evolved about 25 million years ago when a medium-sized primate group split into two groups: apes and __________________ .

Back

monkeys

Front

Which is true of most primates except humans? Options: They walk on four limbs most of the time., They have six toes on each foot., They have claws.

Back

They walk on four limbs most of the time.

Front

Scientists learn about the ancient past from ____________ , or the preserved remains of ancient life, which may include bones and footprints.

Back

fossils

Front

Early hominins were initially partly _______________ , which means they could walk partly on two legs, but by 2.5 million years ago they had evolved to walk up-right.

Back

bipedal

Front

Modern humans are known as ______ ___________.

Back

Homo sapiens

Front

The ape family branched into two major lines: ___________, which were humanlike mammals, and apes, including modern chimpanzees and bonobos.

Back

hominins

Front

As the hominin species continued to evolve, the size of their _____ kept growing, which also required them to _____.

Back

brains; eat more

Front

When men and women bonded to each other, they worked together to ___________.

Back

ensure the survival of their children.

Front

What does the Out-of-Africa model say?

Back

Modern humans evolved in one place and migrated to other parts of the world. As they spread out, they replaced hominins.

Front

What does the Multiregional model say?

Back

Modern humans evolved independently from other scattered early human Homo species in different parts of the world.