Multiple choice

What percentage of all medical ingredients in the world come from rainforests?

  1. 10%

  2. 50%

  3. 25%

  4. 75%

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

About 25% of all modern active ingredients in medicines are derived from tropical rainforest plants. Despite this, only a tiny fraction of rainforest plants have been thoroughly tested for their medicinal properties.