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Answer: Option (C)
Explanation: Non renewable resources refers to those resources that cannot be regenerated after being used. This are also known as the conventional energy resources. They are formed from the decay of ancient planta and animals that were buried millions of years ago. For example, coal, petroleum, oil and natural gas.
This <u>amount of this resources are present on the earth in a very fixed amount and have great economic significance</u>. Since it is present in a very small amount, so it must be use carefully and if possible should make minimum use of it.
In order to sustain this resources, alternate renewable resources are being used.
Thus, the correct answer is option (C).
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</span><span>the time or date (twice each year)
</span><span>when day and night are of equal length</span>
Often, waterfalls form as streams flow from soft rock to hard rock. This happens both laterally (as a stream flows across the earth) and vertically (as the stream drops in a waterfall). In both cases, the soft rock erodes, leaving a hard ledge over which the stream falls
Because the Moon<span> rotates </span>on<span> its axis at the same rate that the </span>Moon<span> orbits the </span>Earth<span>, </span>a<span> situation known as synchronous rotation or tidal locking. The </span>Moon is <span>directly illuminated by the Sun, and the cyclically varying viewing conditions cause the lunar phases.
Hope this helps :)
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