How do people in Egypt earn there food?

Why did roosevelt support a “europe first” strategy even though it had been japan that had first attacked the united states?

Identify they difference in plant domestication between mesopotamia and mesoamerica during the neolithic revolution

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