Because you can see all the mountains that are on the world and just understand it better<span />
Answer:
Valleys, canyons, oases, plains, and sand dunes
Explanation:
I looked up the answer, also I don't know if this is what you're asking but here you go
Convection currents occur in the MANTLE. The mantle is the second layer of the earth after the crust. The mantle is approximately 2900 km thick. Convection currents are triggered or fueled by the heat from the Earth's core.
The part of the mantle closest to the core gets heated. It then becomes less dense than the layers above so it rises. When this rising plume interacts with the crust it cools and becomes more dense than the layers below and so it sinks and this circular motion continues to form convection currents.
Water changes forms through temperature change as it goes through the water cycle. It evaporates by being heated by the sun, it condenses by cooling as it reaches higher altitude. It precipitates when the cooled water becomes heavy, and the cycle starts all over again.
