Which of the following is not true concerning rainforests?
a.
twenty-five percent of western pharmaceuticals are derived from rainforest ingredients.
b.
almost 50,000 rainforest species are lost every year due to deforestation.
c.
half of all rainforest plants have been tested for their medicinal properties.
d.
projections say rainforest deforestation could eliminate half of the world’s species.

The incorrect statement is option c.

Explanation:

The rain forest possesses millions and billions of the species of plants, which is tested and examined each year for its medicinal characteristics. However, it is still not possible to examine even half of the plants of rainforest regarding its medicinal characteristics. There are various species, which have been examined previously and are now utilized for its medicinal features.

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