16 Drag the tiles to the correct boxes to complete the pairs.
Match the words to their correct meanings.
immigrants
emigrants
population trend
natural increase
changes in population over a period of time
people who leave their native country
people who come to live in a new country
the difference between the birth and death rate
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polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.