Araised flat area of flat land with steep cliffs, smaller than a mesa

How would i answer this for an exam?

What is an additional type of erosion found at the coast? what does it mean?

What types of jobs typically are found in ghetto, inner-city neighborhoods? a. low-wage positions, typically in retail outlets, that require little education b. professional positions with banks, doctors' offices, and other similar businesses c. hourly factory and manufacturing positions d. positions that require advanced education, such as those in financial or technology firms select the best answer from the choices provided.