How is the movement of loess different from the movement of sand?

The movement of Loess

Loess are deposits of fine particles of silt and clay formed by the wind. It is known to be a deposits form vertical cliffs which is often forms a thick, rich soil.

The movement of sand forms the Sand Dunes.

A sand dune is formed when an obstacle (rock) slows down the wind causing some sand accumulation by the wind. The dune increases in size, slowly occupying the land as more sand is deposited by saltation (deposit of more grains of sand along the gentle slope).

answer; the above answer to the above statement is (true)

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.