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There are two types of compounds: molecular and ionic. ill give you an example of each Water-H20 molecular compound Salt-NaCl ionic compound. There are ionic compounds which is a compound formed by a positive metal ion and a negative nonmetal ion.
Medicinal plants. Medicinal plants, medicinal herbs, or simply herbs have been identified and used from prehistoric times. Plants make many chemical compounds for biological functions, including defence against insects, fungi and herbivorous mammals. Over 12,000 active compounds are known to science.