Why are fishes not able to survive in distilled water? Why do we have seasons ? Why do eggs become hard on boiling? Why do our eyelashes and eyebrows never continue to gow unlike hair on our head? Why is the power of a loudspeaker expressed in watts? Why is fire hot? Why do lips become dry during winter? Why do houseflies rub their front legs together? Why does sea water not erode coastal areas in all places? Why is the Earth's core hot? What caused it to heat up? Is it still heating, or now cooling? Why does rain come in drops and not in a continuous stream? Why is the @ symbol used in an email address? Why can't bananas and jackfruits be refrigerated? Then how do you preserve them? Why does a single cross hybrid give better yield compared to double cross hybrid? Why are dolphins considered very intelligent? Why are dugongs known as the cows of the sea? Why are oceans known as reservoirs of heat? Why are sharks dangerous? Why are there only 60 seconds in a minute? Why did Vasco da Gama undertake sea voyage? Why do crustaceans moult? Why do sailors watch the tides? Why do waves break? Why does a dogfish have no bones? Why does the water in oceans and sea not dry up?
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