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Algae is a large group of photosynthetic eukaryotic organisms. 

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https://www.livescience.com/54979-what-are-algae.html

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Petroleum is also known as crude oil and oil, is a naturally occurring, yellowish black liquid found underneath the Earth's surface.

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https://www.britannica.com/science/petroleum

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A synthetic polymer is made by the linkage of an amino group of one molecule and a carboxylic acid group including many synthetic fibers.

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https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Amides/Reactivity_of_Amides/Polyamides

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Nylon is a silk-like material. It can be melted into fibers, films, or shapes.

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https://www.britannica.com/science/nylon