Which of the following is NOT a natural source of plastic?

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Multiple Choice

Which of the following is NOT a natural source of plastic?

Explanation:
Plastics come from polymers, and some polymers occur naturally in living things, while many plastics are made by chemically processing materials from fossil fuels. Plants and trees contain natural polymers such as cellulose and starch that can be used to make plastic-like materials. Animals also have natural polymers like keratin or chitin that can be extracted or inspire biobased materials. Crude oil, on the other hand, is not a polymer itself; it’s a fossil fuel that is refined into monomers and then polymerized to make conventional plastics. So crude oil is not a natural source of plastic, whereas the others are.

Plastics come from polymers, and some polymers occur naturally in living things, while many plastics are made by chemically processing materials from fossil fuels. Plants and trees contain natural polymers such as cellulose and starch that can be used to make plastic-like materials. Animals also have natural polymers like keratin or chitin that can be extracted or inspire biobased materials. Crude oil, on the other hand, is not a polymer itself; it’s a fossil fuel that is refined into monomers and then polymerized to make conventional plastics. So crude oil is not a natural source of plastic, whereas the others are.

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