In a series of undisturbed sedimentary rock layers, the oldest layers are a. on the bottom b. on the top c. variable depending on location

community or area create social relationships that typically differ greatly from the affiliations ultimate effects of travel experiences on the population in areas of origin, as well as in places of wage of only a dollar or two. motorcoach operators, museums, and restaurants fall into the broad category of public

explanation:

a characteristic is a deep cut in the earth or left over rock aka till.