Past Climate Changes on Earth

What is the main topic of the passage titled 'Past Climate Changes on Earth'?

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According to the passage, what happens when the energy entering and exiting the Earth system are in balance?

• The Earth's temperature remains stable.

• The Earth's temperature increases.

• The Earth's temperature decreases.

• The Earth's atmosphere becomes unstable.

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NGSS.HS-ESS2-4

Explain how energy balance affects Earth's climate according to the passage 'Past Climate Changes on Earth'.

• Energy balance affects Earth's climate by regulating temperature and weather patterns.

• Energy balance has no impact on Earth's climate.

• Energy balance only affects the climate in polar regions.

• Energy balance is unrelated to climate change.

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NGSS.HS-ESS2-4

About how many million years ago did Earth's temperature rise suddenly during the Eocene Period?

• 56 million years ago

• 34 million years ago

• 65 million years ago

• 23 million years ago

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What evidence do scientists have that the Arctic was warm during the Eocene Period?

• Fossilized tropical plants found in the Arctic

• Presence of polar ice caps

• Discovery of dinosaur fossils

• Evidence of volcanic activity

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One possible cause of warming in the Eocene Period is:

• volcanic activity

• Coup by the alligators of the world

• glacial melting

• solar minimum

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Greenhouse gases like carbon dioxide affect Earth's temperature by:

• trapping heat in the atmosphere

• reflecting sunlight away from Earth

• absorbing harmful UV radiation

• cooling the Earth's surface

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What happened to the ocean water during the Eocene Period?

• The ocean water became warmer.

• The ocean water became colder.

• The ocean water remained the same temperature.

• The ocean water evaporated completely.

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What is 'Snowball Earth'?

• A period when the Earth was completely frozen

• A type of snowball used in winter sports

• A fictional planet in a science fiction novel

• A type of ice cream flavor

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NGSS.HS-ESS2-4

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During which period did the Earth experience much colder temperatures, leading to the nickname 'Snowball Earth'?

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