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Practice problem

Climate Change — Overview & Effects

By Valeri Natole
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I. Climate change happens naturally over long, long periods of time. II. Climate change is completely unnatural. III, Human activity has caused climate change to speed up. IV. Sped-up climate change is not dangerous to the biosphere. V. Sped-up climate change is a major threat to the biosphere.

By NASA Goddard Space Flight Center Image by Reto Stöckl [Public domain], via Wikimedia Commons

Which of the above statements are true?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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