First used in western medicine in the 17th century what was the drug developed from the bark of the cinchona tree used to treat?
In the 19th century in Europe, cubebs, known as Piper cubeba, tailed pepper, or Java pepper, were thought to be possibly a useful medicine in the treatment of what?
What resin, often used as food flavouring and for medicine, is currently drawn from the trees of various Styrax species native to Sumatra, Java, and Thailand?
Which of these is a tree disease spread by beetles? A. German Oak Disease B. Dutch Elm Disease C. Belgian Ash Disease D. Australian Willow Disease
