Why is it important to study the history of Africa? Why do we not learn about African History in school?
What did Africans accomplish?
Who studied in Egypt?

I need help with answering these questions :/ Please and thank you

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