1. The process of one plate moving under another plate is called a. abduction b. drifting c.ridge push d. subduction 2. Tectonic plates float on the a atmosphere b. asthenosphere c. lithosphere d. hydrosphere 3. What is the heat source that makes the mantle to have convection current? a. Asthenosphere c. Sun's heat on Earth's surface b. Earth's core d. the Moon 4. What evidences were presented to support the Continental Drift Theory? a. climate, plants& animals C. climate, fossils & rocks b. plants, animals& fossils d. fossils, rocks& plants ​