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Answer 1

Answer:

ans 9. inexhaustible natural resources are those that are replenished by nature. eg .solar energy. exhaustible natural resources are those that are not replenished by nature in small period of time. it takes thousand of years to be replenished. eg. coal and petroleum.

ans 13. i) Compressed Natural Gas

ii) Petroleum Conservation Research Association

iii) Liquefied petroleum gas