- 1. Which region of Mexico is known for its extensive underground river systems?
A) Baja California
B) Chiapas
C) Mexico City
D) Yucatán Peninsula
- 2. What is the name of the largest underground river in the Yucatán Peninsula?
A) Cenote Ik Kil
B) Rio Secreto
C) Cenote Dos Ojos
D) Sac Actun
- 3. What natural feature often indicates the presence of an underground river?
A) Mountains
B) Lakes
C) Deserts
D) Cenotes
- 4. What is the term used for the entrance to an underground river?
A) Riverbank
B) Cenote
C) Estuary
D) Spring
- 5. Which ancient civilization used cenotes for rituals and sacrifices?
A) Maya
B) Aztec
C) Zapotec
D) Olmec
- 6. Which popular tourist location features underground rivers and cenotes in the Riviera Maya?
A) Xcaret
B) Coba
C) Chichen Itza
D) Tulum
- 7. What substance primarily contributes to the acidity of rainwater affecting limestone?
A) Carbon dioxide
B) Methane
C) Ozone
D) Sulfur dioxide
- 8. In which state is the Grutas de Tolantongo located, famous for its thermal waters?
A) Veracruz
B) Oaxaca
C) Hidalgo
D) Guerrero
- 9. Which underground river is known for its stunning stalactites and stalagmites?
A) Cenote Sagrado
B) Rio Secreto
C) Cenote Xkeken
D) Cenote Samula
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