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