Which of the following statements best explains the large numbers of European language speakers in North Africa? A. European armies conquered the region in the 600s.
B. European languages are official languages of North African countries.
C. Laws were passed forcing people to learn European languages.
D. The region was under the control of European colonial powers until the mid-1990s.

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

How would i answer this for an exam?

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.