Mass Extinctions

How many mass extinctions have happened in the last 450 years?

• 3

• 4

• 5

• 6

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What did the 5 mass extinctions have in common?

• Type of plants

• The animals that existed

• Climate Change

• Rock layers

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Why are the extinction rates a 100-1000 times more than what they would have been naturally?

• Certain species of animals

• Contribution of humans

• Earthquakes

• Wildfires

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About 450 million years ago, almost all life was present in the

• Forests

• Oceans

• Under Earth's crust

• Deserts

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How could plants be responsible for causing a mass extinction?

• Plants took over all the space on land

• The animal numbers were so high that the number of plants decreased drastically

• Plants absorbed so much Carbon dioxide that they caused global cooling

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The Permian Triassic Extinction event is also known as 

• The Great Dying

• The Great disaster

• Death of plants

• End of the world

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The massive supercontinent that broke apart into the current known continents is known as

• The Great Earth

• Supercontinent

• Pangea

• Jurassic Park

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The extinction of dinosaurs led to the Age of

• Insects

• Mammals and Birds

• Plants

• Ocean animals

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What is contributing to the current extinction rate moving faster than K-T Extinction?

• Rising Carbon dioxide levels

• Habitat destruction

• Invasive species

• All of the above

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The Sixth Extinction will be caused by

• Humans

• Rise in the number of animals

• Rise in the number of plants

• Pollution

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