Which of the earth’s spheres is composed of all the water on the planet, including oceans, seas, and rivers? a. the hydrosphere b. the atmosphere c. the biosphere d. the lithosphere

A. the hydrosphere

Hydro, think water, think hydration

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.