Multiple choice general knowledge

-- percent of Earth's oxygen is produced by the Amazon forest

  1. 10

  2. 20

  3. 30

  4. 40

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

The Amazon rainforest is estimated to produce approximately 20% of Earth's oxygen through photosynthesis. This commonly cited figure, though recent research suggests the percentage may be lower when considering net oxygen production.