Use area model to factor each expression

Which of the following is defined as combinations of soil particles that vary in size and shape?

In the diagram below dab and dac are adjacent angles

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust