A) Sinkhole B) River C) Lake D) Volcano
A) River water B) Groundwater C) Rainwater D) Ocean water
A) Aztec B) Olmec C) Inca D) Maya
A) Hiking B) Swimming C) Skydiving D) Skiing
A) Hot springs B) Sand dunes C) Stalactites and stalagmites D) Surfing waves
A) Black B) Brown C) Turquoise D) Red
A) Tulum B) MĂ©rida C) Valladolid D) CancĂșn
A) Sand supply B) Water source C) Wood source D) Mud supply
A) Volcanic eruptions B) Coastal erosion C) Glacial activity D) Collapse of limestone bedrock |