Biology
Which one of the following processes takes place in lakes during eutrophication?

Loss of dissolved nutrients from water
Rapid destruction of algal growth
Excessive availability of dissolved oxygen
Excessive entry of nutrient into water

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Biology
Which one among the following statements is correct ?

All arteries carry oxygenated blood
Except the pulmonary vein, all other veins carry oxygenated blood
All veins carry oxygenated blood
Except the pulmonary artery, all other arteries carry oxygenated blood

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