Question

Give reason:-
1)some natural resources can be exhausted?

2) petroleum is called black gold?

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Answer 1

Answer:

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Explanation:

1) Some natural resources can be exhausted: Natural resources take a long time to form over millions of years and in the way in which the human population is using them, it will be exhausted very soon. natural resources are formed by the decaying of plants and animals for a very long duration of time.

2) Petroleum is called black gold: Petroleum is called black gold because when the crude oil is extracted from the soil below, it is black in color. Petroleum is very expensive like gold. Comparing its high value with gold in terms of properties and moneywise; it is regarded as black gold.