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the number of births in a year
the using up of goods and sevice
the number of deaths in a year
a poorer country with a less advanced economy.
the length of time it takes for a population to double
a community of all the living things in an area and the environment in which they live
a severe shortage of food that results in widespread hunger
- a resource that can't be used up or that can be replaced
- as quickly as it is used up
an artificial lake where water is stored
the creation and use of tools to meet practical needs
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