Describe the hierarchy of service provision.
Name of area

The number of services that settlement settlement provides increases with settlement size. small settlements will only provide low order services such as post offices, doctors and newsagents. large towns, cities in conurbations will provide low and high order services such as leisure centers, chain stores and hospitals.

The genetic material (mrna) code for proteins. so the nucleus is the part of the cell.

Ithink the answer  is d. tourism.hope this ☺☺