A) Hot Springs, South Dakota B) Denver, Colorado C) Los Angeles, California D) Austin, Texas
A) 1965 B) 1974 C) 1990 D) 1980
A) The sinkhole B) A cave C) A glacier D) A riverbed
A) Excessive predation by lions B) Alien interference C) Nuclear war D) Climate change and habitat loss
A) Educational exhibits B) A movie theater C) A restaurant D) An amusement park
A) A valley B) A canyon C) A glacier D) A sinkhole
A) The age of the rocks B) The number of mammoth specimens C) The presence of ancient humans D) The variety of dinosaurs
A) About extraterrestrial life B) About ancient human civilizations C) About the ecosystem and climate of the time D) About dinosaurs
A) South Dakota State Conservation B) Smithsonian Institution C) The Mammoth Site of Hot Springs, South Dakota, Inc. D) National Park Service |