- 1. Which country does the Purus River flow through?
A) Brazil
B) India
C) Russia
D) Australia
- 2. Which of the following animals can be found in the Purus River basin?
A) Kangaroo
B) Polar bear
C) Panda
D) Pink river dolphin
- 3. What is the main economic activity along the Purus River?
A) Fishing
B) Skiing
C) Oil drilling
D) Diamond mining
- 4. What is the largest city located on the Purus River?
A) Pucallpa
B) Porto Velho
C) Lábrea
D) Iquitos
- 5. What is the main threat to the biodiversity of the Purus River?
A) Deforestation
B) Alien invasion
C) Noise pollution
D) Underwater volcanoes
- 6. What is the dominant fish species in the Purus River?
A) Salmon
B) Carp
C) Tilapia
D) Arapaima
- 7. What is the average annual rainfall in the Purus River basin?
A) 500 mm
B) 10,000 mm
C) 5,000 mm
D) 2,500 mm
- 8. Which famous naturalist visited the Purus River in the 19th century?
A) Alexander von Humboldt
B) Henry Walter Bates
C) Charles Darwin
D) Alfred Russel Wallace
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