What is ‘blue carbon’?

[6-5-2022] Microsoft Rewards Bing Homepage Quiz Question: What is ‘blue carbon’?

The given options are:

  • Carbon emitted by airplanes
  • Carbon offsets purchased by liberals
  • Carbon captured by oceans

Correct Answer: Carbon captured by oceans

Info: The term ‘blue carbon’ refers to carbon that is captured by the world’s oceans and coastal ecosystems. Just as forests on land remove climate-changing carbon dioxide from the atmosphere, the oceans’ algae, sea grasses, mangroves, and salt marshes capture and hold carbon dioxide, acting as a giant carbon sink. Some scientists believe that because oceans cover 70% of the planet, blue carbon has the potential to remove far more carbon than terrestrial forests.


Today’s “Microsoft Rewards Bing Homepage Quiz” has three questions related to the environment. Each question has only one correct answer and carries one point. The wrong answer does not earn any points. So, select only the correct answers.

All three questions from today’s Bing Homepage Quiz are below. You can find their answers by visiting those pages.

  1. What is the name of the people who have long inhabited northern Norway, Sweden, and Finland?
  2. For World Environment Day on June 5, what is the top source of greenhouse gas emissions in the US?
  3. What is ‘blue carbon’?

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