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7.2 - Carbon and Climate Change

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✅EvaluateQuestion 1 of 21

Carbon dioxide (CO₂) helps the atmosphere retain heat mainly because it

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✅EvaluateQuestion 2 of 21

The concentration of carbon dioxide in the atmosphere is commonly measured in

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✅EvaluateQuestion 3 of 21

Which human activity is a major source of increased atmospheric CO₂ since 1900?

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✅EvaluateQuestion 4 of 21

A carbon sink is best described as

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✅EvaluateQuestion 5 of 21

The enhanced greenhouse effect refers to

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✅EvaluateQuestion 6 of 21

A likely global result of increased CO₂ is

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✅EvaluateQuestion 7 of 21

Which process removes CO₂ from the atmosphere most directly?

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✅EvaluateQuestion 8 of 21

A student writes: “CO₂ causes warming because it stops sunlight entering Earth’s atmosphere.” What is the BEST correction?

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✅EvaluateQuestion 9 of 21

A country reports that its forest cover decreased sharply over 20 years. Which change is MOST likely in the carbon cycle?

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✅EvaluateQuestion 10 of 21

A coastal hotel in Barbados uses a diesel generator more often during power outages. This could increase CO₂ mainly because it

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✅EvaluateQuestion 11 of 21

A carbon sink that can absorb CO₂ on a large scale is the

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✅EvaluateQuestion 12 of 21

If atmospheric CO₂ rises, which chain best links it to climate change?

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✅EvaluateQuestion 13 of 21

A student sees CO₂ rise from 300 ppm to 360 ppm. The increase is

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✅EvaluateQuestion 14 of 21

Which statement BEST describes the difference between mitigation and adaptation to climate change in a Caribbean context?

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✅EvaluateQuestion 15 of 21

A student claims: “If oceans absorb CO₂, rising CO₂ cannot cause warming.” Which response is MOST accurate?

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✅EvaluateQuestion 16 of 21

A rainfall record from St Vincent shows longer dry spells over several decades. Which explanation best links rising CO₂ to this change?

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✅EvaluateQuestion 17 of 21

A coral reef near Tobago experiences bleaching after unusually warm sea temperatures. Which chain is MOST scientifically sound?

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✅EvaluateQuestion 18 of 21

A Caribbean town plants mangroves and also installs solar panels. Which option correctly matches each action?

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✅EvaluateQuestion 19 of 21

A student answers an essay question with: “CO₂ increased since 1900 because the Earth got warmer.” What is the BEST correction?

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✅EvaluateQuestion 20 of 21

A class compares two scenarios for Barbados: Scenario 1 has rising CO₂ and 0.30 m sea‑level rise by 2100; Scenario 2 has stable CO₂ and 0.05 m rise. Which planning decision best shows adaptation to Scenario 1?

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✅EvaluateQuestion 21 of 21

Which pair lists ONE clear source and ONE clear sink in the carbon cycle?

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✅EvaluateQuestion 1 of 21

Carbon dioxide (CO₂) helps the atmosphere retain heat mainly because it

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