Geologic History and the Evolution of Life Chapter Review

Sudden changes in rock color

Changes in rock texture

Changes in rock density

Sudden changes in fossil types

Because of varying lengths between changes

Due to measurement errors

Due to technological limitations

Because of random selection

Catastrophic events

Climate change

Habitat destruction,

Changes in sea levels.

All answers are correct.

Volcanic eruptions were the sole cause of dinosaur extinction with a large impact area.

Dinosaurs went extinct due to climate change alone. It blocked the atmosphere and got cooler.

Meteorites caused the extinction due to a massive impact & by iridium-rich clay

Dinosaurs were hunted to extinction by early mammals. They caused them to disappear.

Populations become extinct due to isolation. They cannot adjust to their surroundings

Geographic isolation can lead to populations evolving independently.

Geographic isolation has no effect on populations. They can live independently.

Isolated populations always merge back together. The mutations help them adapt.

Tectonic plates are responsible for climate change.

They can cause populations to separate or join

Tectonic plates only affect ocean currents

Tectonic plates have no impact on species

About 600 million years old