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