MCQ
Forest is an:
- AExhaustible resource
- BRenewable resource
- CInexhaustible resource
- DBoth A and B
Explanation:
Resources which get exhausted and are not available in nature in plenty and are known as exhaustible natural resources. They take longer to get replenished. For example, coal, petroleum, forest, minerals, etc. A renewable resource is an organic natural resource which can replenish to overcome usage and consumption, either through biological reproduction or other naturally recurring processes. Forests are renewable natural resource capable of providing several major and minor forest products and contribute substantially to economic development. The forests consist of a variety of flora and fauna, which form a rich bio-diversity and play a vital role in the environmental stability and ecological balance.
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$(A)$ Wings of butterfly and birds look alike andare the results of ___$(i)$___ evolution.
$(B)$ Miller showed that $CH_4 , H_2 , NH_3$ and ___$(i)$___ when exposed to electric discharge in a flaskresulted in formation of ___$(ii)$___ .
$(C)$ Vermiform appendix is a ___$(i)$___ organ and an ___$(ii)$___ evidence of evolution.
$(D)$ According to Darwin evolution took placedue to ___$(i)$___ and ___$(ii)$___ of the fittest.