Pls help asap will give pls make sure your answers are correct

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

Trade routes emerged along which coast when arab and indian traders from around the indian ocean mixed with the bantu people from africa's interior? a. swahili coast b. guinea coast c. drakensberg coast d. namib coast

Give three differences between oceanic and continental crust brainliest will be awarded