In a reflex action, impulse flows from

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All the cell bodies in the spinal cord are found in

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If the blood is too concentrated, more water is absorbed from

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Which structure is the glomerulus?

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Free nitrogen is released to the atmosphere by

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What do bacteria in root nodules derive from the host plant?

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An acidic soil can be improved upon by

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Which of the following constitute pollution?

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Which set of disease is spread mainly by insect vectors?

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Physiological adaptation to very dry condition in animals is called

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The salinity of a brackish enviroment

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