Answer:
the older person who has retired or receives an old age pension is senior citizens
Germany's geographic location was an advantage when it was on the offensive in the war because <span>it was situated next to an extremely wide river, the Rhine, which was difficult for the Allies to cross.</span>
The correct answers are: a roller coaster, a farm and an office building.
Built environment or built world<em> are human-made surroundings that provide the settings for a particular human activity.</em> They are human-made places where people live, work and recreate on a daily basis. They can be buildings, parks and transportation systems.
They are to be distinguished from a natural environment. A city park is an example of a built environment, a wild jungle is not.
<em>A roller coaster</em> is a place used for recreational purposes and man-made.
<em>A farm</em>, even if established on a wild, previously unoccupied field, is a built environment as it had been modified by humans to cater for and to adopt for their needs.
<em>An office building </em>is a place that only exists because humans built it, it is therefore, the perfect example of a built environment.