a demographer - a person who studies changes in numbers of births, marriages, deaths, etc. in an area over a period of time, to populate - to live in an area or place, outer space - the part of space that is very far away from Earth, infrastructure - the basic systems and services, such as transport and power supplies, that a country or organization uses in order to work effectively, an entrepreneur - someone who makes money by starting their own  business, especially when this involves seeing a new opportunity and taking risks., ingenuity - someone's ability to think of clever new ways of doing something., to unleash - to suddenly release a violent force that cannot be controlled, echoed - repeated (someone's words or opinions), typically to express agreement, a species - a set of animals or plants in which the members have similar characteristics to each other and can breed with each other., civilization - human society with its well developed social organizations, or the culture and way of life of a society or country at a particular period in time, an inhabitant - a person or animal that lives in a particular place, to envision - to imagine or expect something to happen, appear, etc. in a particular way, pristine - new or almost new, and in very good condition, to exploit  - to use something in a way that helps you, to conceive - to imagine something,

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