The astenosphere plays a key role in the plate tectonics theory because it is the one that provides the high temperatures, high pressure, and magma, that are the ones responsible for cracking up the crust on the surface.
The astenosphere, with the ability to crack the crust on the surface of the planet is creating the continental and oceanic tectonic plates, and it also provides the push force from bellow so that they can move across the globe and thus be creating the landscape on the planet.
First of all it's easier to filter the water than to go spend $500 to get a glass of water from Canadaand sometimes you just need to use what you had we don't need to be spending so much money on something we don't have that we don't really needand we have water filters we need to use them we are not relying on streams and things like that to live now so just use a water filter that you have at your house or maybe one of your friends have one
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The answer is B - Rugged landscape of mountainous land
The answer would be the 4th option. (Rainwater soaking into the ground). Soil erosion is commonly caused by rainwater soaking into the ground.