Rubber May Soon Come from Weed

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synthetic - adj., of, relating to or produced by scientific methods, as synthetic material  

tires - n., rubber objects that fit around a wheel as in a car

dandelion - n., a plant, a weed

plantation -  n., a large area of land, especially in a hot part of the world, where crops such as cotton are grown.

source - n., someone or something that provides what is wanted or needed