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The ____ Ocean opened along a ____ plate boundary between Laurentia and Baltica.
Q13: Climatic and geographic barriers provide boundaries for
Q16: A glacier is retreating when _.<br>A) accumulation
Q21: Evaporites in the rock record commonly indicate
Q21: A conglomerate that is formed by glacial
Q26: An erosional surface that separates older metamorphic
Q27: True mammals evolved from _, which were
Q50: The high altitudes of the Himalaya indicate
Q55: The Caledonian orogeny closed the Iapetus Ocean
Q60: Discuss the development of marine plants to
Q61: Quartz, feldspar, and clay minerals are the