The progressive tense already happened may happen

Organizing supporting materials within your outline is important. for your outline, which of the following ensures each element of the outline should express one idea; this way themes do not overlap or appear redundant?

Many plains indians who were forced onto reservations had trouble adapting because they were not used to living within borders. used to hunting for their food. not used to living in communities. used to working in factories.

Which letter represents the atomic number? a) a b) b c) c