Sand Pyramid, Sand Castle :)
riding dune buggies
letters are examples of non integers.
There are several dunes in Namibia that exceed 300 meters (980 feet) in height. The height varies depending upon the wind. Two well-known dunes are 'Big Daddy" and Dune 7.
Blowing sand and Niagara Falls.
examples of engineering and non engineering?
Two examples are plastic and wax. Both plastic and wax are non-polar substances and therefore do not dissolve in water, which is a polar solvent.
Because the wind blows the sand one way, not both. One side of of a sand dune is different than the other side because each side is formed by a different element. If one side is formed by wind and the other side is formed by water, it is impossible for the two different sides to be identical. +++ First sentence correct; second, not so. Although water does deposit sand in dune-like ways, the question is about sand-dunes, formed only by the wind (which is not an "element" either; nor is water). Wind and water will not work as suggested. The simple answer is that as the sand ridge builds up the wind blowing over it eddies over the edge, dropping sand grains close to the lee slope.
Toluene and THF. non-aqueous means it does not contain water.
Basalt and sandstone.
Because the wind blows the sand one way, not both. One side of of a sand dune is different than the other side because each side is formed by a different element. If one side is formed by wind and the other side is formed by water, it is impossible for the two different sides to be identical. +++ First sentence correct; second, not so. Although water does deposit sand in dune-like ways, the question is about sand-dunes, formed only by the wind (which is not an "element" either; nor is water). Wind and water will not work as suggested. The simple answer is that as the sand ridge builds up the wind blowing over it eddies over the edge, dropping sand grains close to the lee slope.
it has two system that we need
Wheat & barley