Consider the information you have learned about the Columbian Exchange. Which location, New World or Old World, influenced the other more? Support your decision with facts from the reading.

What is the name of the ocean current that affects the british isles? how does it influence their climate?

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

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