Idiom
Biotic component of the environment does not include-

Plant system
Micro-organism system
Animal system
Soil system

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Idiom
To throw up the sponge

To maintain grit and enthusiasm until the end
To offer a challenge
To surrender or give up a contest
To become utterly disappointed

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Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. To take people by storm

To captivate them unexpectedly
To exploit people's agitation
To bring out something sensational attracting people's attention
To put people in utter surprise

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