____ are substances that have been extracted from plants for centuries for their use as food additives as well as medications.

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Oils, such as essential oils, have been extracted from plants for centuries and used as food additives as well as medications. Saps are also extracted from plants, but they are primarily used as building materials or for other industrial purposes. Fumes and gels are not typically extracted from plants for these purposes.

____ Are Substances That Have Been Extracted from Plants for Centuries