This power is highly concentrated in herbs and spices; just half a teaspoon of ground cinnamon has as many antioxidants as half a cup of blueberries, and half a teaspoon of dried oregano has the antioxidant power of three cups of raw spinach.[1]
Some Rough Estimates of Species Numbers. The estimated number of animals on our planet falls somewhere in the vast range of 3-30 million species (Erwin 1983, Wolosz 1988).
The total number of plant species in the world is estimated at 270,000. Approximately 1,000 to 2,000 species of plants are edible by humans. About 100 to 200 species of plants play an important role in world commerce, and about 15 species provide the majority of food crops.