4: Climate change Flashcards

1
Q

How old is the earth

A

4.55 billion years old

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2
Q

The geological timescale subdivides Earths history into;

A

Eons

Eras

Periods

Epochs

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3
Q

What is meant by greenhouse and icehouse climates;

A

Greenhouse times - no permanent ice on the planet

Icehouse times - Permanent ice on the planet

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