Which of the following correctly describe coal?Multiple select question.Formed from partially decayed plant materialNot a sedimentary rockFormed from completely decayed plant materialAn organic sedimentary rock
Question
Which of the following correctly describe coal?Multiple select question.Formed from partially decayed plant materialNot a sedimentary rockFormed from completely decayed plant materialAn organic sedimentary rock
Solution
The correct descriptions for coal are:
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Formed from partially decayed plant material: This is true. Coal is formed from the remains of plants that lived and died about 100 to 400 million years ago when parts of the earth were covered with huge swampy forests.
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Not a sedimentary rock: This is false. Coal is considered a type of sedimentary rock. It's an organic sedimentary rock to be precise.
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Formed from completely decayed plant material: This is false. Coal is formed from partially decayed plant material, not completely decayed.
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An organic sedimentary rock: This is true. Coal is classified as an organic sedimentary rock because it's made from the remains of plants.
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