The outward appearance or an organism is referred to as

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An example of continuous variation is

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Variation is important in human life and can be used for the following activities except

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Which of the following practices does not contribute to the preservation and improvement of the environment?

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A species whose populations has become so small that it may become extinct if not protected is a/an

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Which of the following factors will most likely lead to overcrowding within a population?

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In ecological succession, since Iichens grow on bare rock, they are considered to be

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Population growth rate may be defined as the

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The following habitats can be used in the study of succession except

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Which of the following features is not an adaptation of plants to aquatic habitat?

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Most tropical plants shed their leaves during dry weather conditions in order to

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which of the following organisms does not show colour adaptation to its environment?

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