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. Which of the following is a medicinal mushroom?
. Which of the following is true? Mushrooms are members of …
. Nearly 3,500 years ago, the bark of the willow tree was used to relieve pain. A popular drug is extracted from this plant. Which of the following is it?
. Which of the following is a type of natural rubber extracted from plants?
. Which of the common plants listed below contains poisonous parts?