Pangea and Gondwanaland were large landmasses that were made of multiple continents. What were Pangea and Gondwanaland?

A. fossils

B. supercontinents

C. minor continents

D. large continents

Which of the following lakes is not found in africa?

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

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