Mim almost done
freshwater that is produced through desalination is

a.
more dangerous than water that has been purified by traditional water treatment methods
b.
more energy-efficient than water that has been produced using other purification methods
c.
less expensive to produce than water that has been purified using other methods
d.
generally much more expensive to produce than water produced using other methods

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

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.

What does 2[tex] {2}^{ - 4} \times {2}^{ - 2} [/tex]