Vocabulary 2.1-2.3

Front

Emigration

Back

Leaving an area as part of a permanent move (in common language, this word has blended into immigration which includes both)

Front

Environmental degradation

Back

Deterioration of the environment through depletion of resources such as air, water and soil and habitat destruction

Front

Immigration

Back

Coming into an area as part of a permanent move (in common language this combines the terms immigration and emigration)

Front

Population distribution

Back

The pattern of where people live

Front

Industrial Revolution

Back

Economic and social changes resulting from technology changes that started in England in 1760 - moving away from hand tools to power-driven machines

Front

Agricultural density

Back

The ratio of the number of farmers to the amount of arable land

Front

Arable land

Back

Land that can be farmed

Front

Arithmetic density

Back

The total number of people divided by the total land area

Front

Ecumene

Back

The permanently inhabited portion of the earth as distinguished from the uninhabited or temporarily inhabited area

Front

Intervening obstacle

Back

A difficulty that prevents people from completing a planned migration