Earth is comprised of four systems, or spheres. give one example of how a change in one of these spheres of the earth can affect one or more of the other spheres.

Gemstones are commonly found in pegmatites, which are igneous rocks that are a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava

Which is the largest ethnic group in guinea? malinkéfula (correct)kissisoussouand another question. guinea has always had a stable government led by elected presidents.truefalse (correct)

The map above shows the countries of the middle east. the country that is highlighted is a. iran b. israel c. saudi arabia d. turkey select the best answer from the choices provided a b c d