Prep 4 Pop Quiz

A person who studies plants and animals by observing them is a __.

Naturalist.

Through __, populations adapt to their environments.

Natural selection.

Some species blend into their environments through __.

Camouflage.

The observation that Galápagos tortoises inhabited different environments helped Darwin __.

B. develop his theory of evolution.

Variations are essential for natural selection because __.

They provide the raw material on which natural selection acts.

Natural selection involves while artificial selection involves .

Natural selection involves environmental pressures, while artificial selection involves human choice.

Earth’s birds achieved their diversity through natural selection by __.

Evolving from an ancestral bird-like population that diversified into many species.