The compound called salicin comes from the bark of the willow tree and it is the active ingredient of the pain reliever called 'aspirin'.
Dying for change
Dying for change New research has found that high atmospheric
levels of carbon dioxide can kill plant- eating insects by reducing
the nutritional value of the leaves they eat. This finding shows
that the increasing levels of carbon dioxide in the Earth's
atmosphere can have indirect effects on life, as well as direct
effects such as the increase in the world's
temperatures. 15 AUGUST 1998, P. 10
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