The document discusses the hydrologic cycle and various landforms. It explains that water evaporates from oceans, bodies of water and plants into the atmosphere as vapor, condenses and falls as precipitation, then soaks into the ground or flows into rivers to be recycled. It describes different types of freshwater and saltwater lakes and landforms found on continents like mountains, hills, plains and plateaus. Ocean landforms include the continental shelf, ridges, valleys and canyons on the ocean floor. Tectonic plates move at divergent, convergent and transform boundaries.

1. Our Blue Planet

5. HYDROLOGIC CYCLE