Cards in this guide (5)
When evolution started
Evolution began 3 billion years ago, when the first life forms
appeared on Earth.
Why might a person whose ancestors came from the Arctic tend to carry more body fat than a person whose ancestors came from the tropics despite similar diets and exercise
People from the Arctic carry more fat because extra fat is an
adaptation to cold environments.
Which of these is an example of the abiotic environment
Over a few million years in Africa droughts have often caused grasses and shrubs to die some years while tall trees survived Because of this giraffes with very long necks could feed in the trees w
Which of these is not an idea put forth by evolutionary biologists
Evolutionary biologists do not believe humans descended from
apes.