A ________ can transform a v-shaped valley into a u-shaped valley
Fill in the blank(s) with the appropriate word(s).
Answer: glacier
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Which of the following situations provides an example of a "back door" cold front?
A. a cold front moving into British Columbia from the Pacific Ocean B. a cold front moving into the desert southwest from northern Mexico C. a cold front moving into the Maritimes from the Atlantic Ocean D. a cold front moving in a clockwise direction around a low pressure centre
Most prosimians are nocturnal. Indicate whether the statement is true or false
Which type of volcano is composed of both lava flows and pyroclastic materials?
a. shield volcanoes b. composite cones c. cinder cones d. fissures e. stock
What best explains why glacial ice cores are ideal for examining climatic conditions in Earth's past?
A. are not contaminated by volcanic activity B. record both warming and cooling periods C. provide actual atmospheric temperatures going back millions of years D. provide high-resolution data on both temperature and carbon dioxide E. all of the answers listed here