Some folk medicines have been found to have a scientific basis.For example, the practice of chewing on willow bark to relieve pain was shown to have merit when it was discovered that willow bark contained the compound salicylic acid.A modified form of this compound, acetylsalicylic acid, is now used as the active ingredient in aspirin.If willow bark were put to the test, experiment after experiment would show that this folk medicine was effective at relieving pain.This is an example of the concept that to be scientific, observations that support a hypothesis must be _______.

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The Answer of Some folk medicines have been found to have a scientific basis.For example, the practice of chewing on willow bark to relieve pain was shown to have merit when it was discovered that willow bark contained the compound salicylic acid.A modified form of this compound, acetylsalicylic acid, is now used as the active ingredient in aspirin.If willow bark were put to the test, experiment after experiment would show that this folk medicine was effective at relieving pain.This is an example of the concept that to be scientific, observations that support a hypothesis must be _______.

Some Folk Medicines Have Been Found to Have a Scientific