Answer: Floors.
Usually the bottom of a main valley is broad independent of the U or V shape. It typically ranges from about one to ten kilometers in width and is commonly filled with mountain sediments. The shape of the floor can be flat or terraced.
No greenhouse gas emissions is the biggest benefit to nuclear energy
Explanation:
Nuclear energy is defined as the energy that is emitted from the nucleus of an atom. One of the biggest benefit of the nuclear energy is that there will be no emission of the greenhouse gas. Huge amount of energy is being produced when weather fission takes place due to the reaction of the nucleus.
Nuclear energy has various advantages that is it reduces relative cost but the construction cost of nuclear plant are large. It reduces pollution. It provides high energy density. Nuclear energy provides base load energy.