The Continental Divide A divides the United States into east and west
B
divides the United States into north and south
C divides the flow of river systems in the United States into east and west
D is a series of rivers and mountains that separates Canada from the United States

Which anatomical feature would you expect to find in the fossil remains of a nocturnal species?

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle

Which two nations are doing the most to combat their environmental issues?