Patterns of Change in Life on Earth

What does the term 'extinction' mean?

• The birth of a species

• The migration of a species

• The death of every member of a species

• The growth of a species

What type of ancient life form is represented by the earliest fossils?

• Dinosaurs

• Cyanobacteria

• Mammals

• Amphibians

What is biodiversity?

• The process of photosynthesis

• The study of fossils

• The variety of life forms

• The extinction of species

What is a mass extinction?

• When many species die out at the same time

• When a single species dies out

• When species migrate

• When new species are formed

What evidence did scientists find related to the K-Pg mass extinction?

• A large meteorite struck Earth

• A new species was discovered

• Fossils of dinosaurs were found

• A volcanic eruption occurred

What type of fossils show traits of both fish and amphibians?

• Sedimentary fossils

• Mass extinction fossils

• Transitional fossils

• Cyanobacteria fossils

What does the fossil record show about species over time?

• Species never change

• Species only increase in size

• Species appear and disappear

• Species always increase

What happens to some plant families after extinction events?

• They all decline

• They remain the same

• They all increase

• Some decline and some increase

What is the main focus of the lesson on patterns of change in life on Earth?

• The study of meteorites

• The history of life on Earth

• The growth of plants

• The extinction of dinosaurs

What is the significance of the fossil record?

• It shows only living species

• It provides information about past environments

• It only shows current species

• It has no scientific value