The condition that encourages denitrification is

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Which of the following is the direct consequence of transferring energy from one trophic level to another?

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A group of organisms of different species living in a particular area is described as a

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The small masses of nervous tissues in which many neurones have their nuclei are called

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The outermost embryonic membrane in the mammal is the

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A dry fruit formed from two or more carpels containing several seeds is a

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The most reliable estimate of growth is by measuring changes in

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Which of the following is not a function of the mammalian skeleton?

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In which of the following groups of animals is the malpighian tubule found?

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Which of following movements occur during exhalation?

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In adult mammalian blood, the cells which lack nuclei are the

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The heart of the adult frog consist of

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