Fossils and Extinction Quiz

Why are fossils crucial for understanding extinct organisms?

• They offer insights into organisms that no longer exist.

• They help us understand the diet of ancient humans.

• They provide direct evidence of current species.

• They are used to predict future climate changes.

What is the most common way fossils form?

• By being trapped in volcanic ash.

• By gradual replacement by minerals.

• Through immediate preservation in amber.

• Through rapid freezing in glaciers.

How do casts form?

• When organisms are frozen in ice.

• When organisms leave footprints.

• When organisms are trapped in tar pits.

• When organisms are buried in soft material like clay.

What conditions prevent decay in fossils?

• High oxygen levels.

• Warm temperatures.

• Presence of moisture.

• Lack of oxygen and moisture.

Why is the fossil record incomplete?

• Fossils are only found in certain parts of the world.

• Many early life forms were soft-bodied and decayed quickly.

• Fossils are too small to be discovered.

• All fossils have been destroyed by humans.

What is one reason a species might go extinct?

• The species becomes too intelligent.

• The environment changes too quickly.

• The species stops reproducing.

• The species becomes too large.

How can a new predator lead to extinction?

• By providing new food sources.

• By creating new habitats.

• By killing all individuals of a species.

• By introducing new diseases.

What catastrophic event is believed to have caused the extinction of dinosaurs?

• A massive volcanic eruption.

• A large asteroid impact.

• A global ice age.

• A widespread disease.

What is a common reason for extinction due to competition?

• A new species outcompetes for resources.

• The species becomes too dominant.

• The species migrates to a new area.

• The species develops new traits.

What additional resources are available on cognito.org?

• Interactive games.

• Virtual reality tours.

• Questions, flashcards, and exam style questions.

• Live tutoring sessions.