task 7

TOPIC	INDEX KEYBORD
1 railways	e) transportation
2 cultivation of oranges	J) citrus farming
3 troposphere	f) atmosphere
4 cotton growing	i)Industrial crops
5 under population	h) population
6 panama canal	c) sea routes
7 growth of New York	b) urbanisation
8     uranium	A)ores
9 coal production	d) mining
10 rainfall	f)climate

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