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What does a food chain always start with-

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Important Questions on Ecology

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The free floating plant specimens are called-
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In which ecosystem grassland is included?
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In a food chain which one is the secondary consumer-
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The driving force of an ecosystem is
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Producers are _____.
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In a food chain, there is 
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The food chain in which microorganisms break down the energy rich compound synthesized by the producers is called
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Spruce and cedar are tree varieties of