Question 1
According to the theory of plate tectonics, large ________ circulate molten rock in different directions within Earth's mantle.
◦ Hadley cells
◦ convection cells
◦ conductive cells
◦ tectonic cells
◦ subduction cells
Question 2


Africa is dominated by which three bioregions?
◦ Evergreen forest, tropical savanna, and tundra
◦ Temperate deciduous forest, evergreen forest, and tropical rain forest
◦ Tropical rain forest, tropical savanna, and desert/grassland
◦ Desert/grassland, tundra, and temperate deciduous forest
◦ Tropical rain forest, tundra, and desert/grassland