Question

Which facts about the world’s rain forests are true?

3 correct

Group of answer choices

Half of the known plant varieties in the world are found in rain forests

The proportion of Earth’s landmass covered in rain forests has decreased by 50 percent since 1950.

Less than 1 percent of the plants in the rain forests have been tested for medicinal purposes

Every continent except Antarctica has a rain forest.

Answer 1

Correct answers:
- Half of the known plant varieties in the world are found in rain forests — True. Rain forests (especially tropical rain forests) harbor a very large share of the world’s plant diversity.
- Less than 1 percent of the plants in the rain forests have been tested for medicinal purposes — True. Only a tiny fraction of rainforest plants have been screened for pharmaceutical or medicinal properties.
- Every continent except Antarctica has a rain forest — True. Both tropical and temperate rain forests occur on all inhabited continents (Europe has small temperate rainforest areas).

The false statement is:
- The proportion of Earth’s landmass covered in rain forests has decreased by 50 percent since 1950 — this specific 50%‑since‑1950 claim is not reliably supported as a precise global figure (estimates of loss vary by region and timeframe).