What is the crust beneath the atlantic ocean like?

The oceanic crusts are thin and are usually about a thickness of about 5 to 7 km. They contain rocks that are poor in silica and mostly enriched in magnesium (Mg) and iron (Fe). Due to the divergent motion of plates, seafloor spreading takes place as a result of which the hot molten magma comes out to the ocean floor and immediately cools down and gets solidified along the mid-oceanic ridge. The rock types produced here are mainly basaltic in nature. Basalt is a mafic rock and is comprised of denser minerals due to which the oceanic crust is relatively denser than the continental crust. Pillow basalts also form in this region.

Thus, the crust that is present beneath the Atlantic ocean is also comprised of basaltic to andesitic in composition.

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.