Climate Change quiz
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Which feature of polar ice cores reveals past CO2 levels?
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More questions about Climate Change
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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What is the main cause of today's global warming?
Answer: Burning fossil fuels
Why: In 2024 about 90% of humanity's CO2 came from fossil fuels and industry, and the rest from clearing land.
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Which country has emitted the most CO2 in total since 1850?
Answer: United States
Why: The US has released about 20% of all CO2 emitted since 1850, nearly double China's 11%.
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How much would seas rise if all of Antarctica's ice melted?
Answer: About 58 metres
Why: Greenland's ice sheet, the only other one on Earth, would raise seas by about 7.4 metres if it all melted.
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Whose eggs hatch mostly female when their nests get warmer?
Answer: Sea turtles
Why: A 2018 study found over 99% of young green turtles from the warm northern Great Barrier Reef beaches were female.
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What can fall from 0.9 to 0.06 when snowy sea ice melts?
Answer: Albedo
Why: Dark open water soaks up more sunlight than ice, so melting warms the sea and melts still more ice.
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How much of today's coral reefs could vanish at 2 °C of warming?
Answer: Virtually all
Why: Even at 1.5 °C of warming, the IPCC projects reefs would shrink by a further 70 to 90%.
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