Correct: Water is more dense than oil (heavier)., Oil is less dense than water (lighter)., Pecan is more dense than oil (heavier)., Pecan is less dense than water (lighter)., The toy fish are more dense than oil and water (heavier)., The pecan is more dense that oil but it is less dense than water while the toy fish is more dense than oil and water., Anything that is heavier will sink., Anything that is lighter will float., Incorrect: Water is less dense than oil (lighter)., Oil is more dense than water (heavier)., Pecan is less dense than oil (lighter)., Pecan is more dense than water (heavier)., The toy fish is less dense than oil and water (lighter)., The pecan is less dense than oil but it is more dense than water while the toy fish is less dense than the oil and water., Anything that is lighter will sink., Anything that is heavier will float.,

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