Floating microscopic heterotrophs are mostly grouped as

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The construction of dams may lead to an increase in the prevalence of

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The chitin in the exoskeleton of many arthropods is strengthened by

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In mammals, the organ which performs digestive and endocrine functions is the

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The correct sequence for the perception of smell in mammals is

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Bacteria multiply rapidly by means of

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In epigeal germination, the cotyledons are

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Insects visit flowers in order to

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Fertilization in humans usually takes place in the

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In dissection, the rib cage of mammal has to be opened in order to expose the

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The lymphatic system of mammals rejoins the blood circulatory system at the

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Yellowing of leaves is a symptom associated with deficiency of

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