The Sahara covers much of northern Africa. The desert environment is hot and dry and receives very little rainfall. How does this affect the people who live in the region? A It is very hard to build shelters in the region.
B.
There is not enough water to grow crops in the region.
The region is often struck by powerful hurricanes.
The region is dominated by factories instead of farms

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal