Extinction and Fossil Evidence Concepts

The video covers the topics of extinction and the fossil record, which are part of the AQA GCC biology curriculum. It defines extinction, explores biotic and abiotic causes, and explains how fossils form. The fossil record provides evidence for evolution and historical migration patterns. The video also discusses the challenges in finding fossils of early organisms and concludes with questions to test understanding.

What is the term used when every member of a species has died out?

• Migration

• Extinction

• Evolution

• Adaptation

Which of the following is a biotic cause of extinction?

• Climate change

• Asteroid collision

• Volcanic eruption

• New predator introduction

How can a new competitor lead to the extinction of a species?

• By introducing new diseases

• By changing the climate

• By causing natural disasters

• By outcompeting for resources

Which of the following is an abiotic factor that can cause extinction?

• Spread of a new disease

• Introduction of a new predator

• Habitat destruction

• Competition for food

What is the most common way fossils are preserved?

• In amber

• In water

• In ice

• In rock

Why are fossils of soft-bodied organisms rare?

• They are destroyed by predators

• They are not found in sediment

• They are too small to fossilize

• They decompose quickly

What process replaces the hard parts of an organism with minerals?

• Decomposition

• Mineralization

• Sedimentation

• Erosion

How can fossils provide evidence for evolution?

• By revealing the diet of ancient species

• By indicating migration patterns

• By displaying changes in organisms over time

• By showing changes in climate

What can the fossil record tell us about long-term migration patterns?

• The diet of ancient species

• The climate of ancient Earth

• The range changes of species over time

• The seasonal habits of animals

Why is the fossil record considered incomplete?

• Many fossils have been destroyed by geological activity

• Fossils are only found in certain regions

• Fossils are too fragile

• Fossils are too difficult to study