15
QuizMultiple Choice

The Building Blocks of Life — Test

Question 15 • Biology

Where is the greatest amount of the world’s carbon found?

Answer
A
plants and animals
B
ocean
C
seafloor sediments
D
atmosphere

Explanation

Most of the world’s carbon is stored in sedimentary deposits, especially carbonate rocks and sediments on the seafloor. The atmosphere, oceans, and living things contain much smaller amounts, so seafloor sediments are the best choice.

AI-written and checked against the verified answer.

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