Hereditary variation is best described as

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Which of the following is an example of discontinuous variation?

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Which of the following natural resources is most readily available to all organisms?

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The following practices are aimed at soil conservation except

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The following are useful measures for conserving forest except

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Prevention of erosion could best be carried out by

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The diagram above represent the shape of major group of bacteria The groups staphylococci and streptobacilli are represented by

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Which of the following is not an effect of over-crowding on a population?

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Which of the following is not an outcome of ecological succession?

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An association between two organisms in which both benefit is called

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Which of these is not applicable to the circulation of water- in nature?

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Which of these statements about food chain is not correct?

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