Exam 19: The Evolutionary History of Life

An asteroid can cause a mass extinction by creating a cloud that blocks out the sun for months or years after impact.

Mammals evolved from a group of reptiles known as ____________ that had mammal-like jaws and limbs positioned partially underneath their bodies.

Mammals evolved from _______ about 220 million years ago.

Which of the following groups of animals evolved the most recently?

Which kind of organism makes up the oldest fossil found on Earth?

The first single-celled prokaryotes evolved 3 billion years after the first eukaryotes.

One way mammal limbs differ from reptile limbs is that

Members of all of Earth's different species (past and present) have been (or will be) converted into some type of fossil after their death.

Which of the following statements is true?

Which of the following is an example of a fossil?

The oxygen necessary to support much of life on Earth is a waste product of an important adaptation, the process of _______.

The first single-celled organisms arose 3.5 _______ years ago.

Which of the following statements about continental drift is true?

Which of the following was not an adaptation of land plants?

Continental drift has played a role in which of the following?

New groups of organisms always form

The same species of dinosaurs that roamed Jurassic Earth would reevolve if humans went extinct.

Which of the following is not true about the Antarctic continent?

Evidence that the Cretaceous mass extinction was created by the impact of an asteroid is the existence of a huge ______ buried under sediments off of the coast of Mexico.

Fossils discovered in Antarctica indicate that the