Question 66544

Qno1) why is butter solid and mustard oil is liquid at room temperature?
Qno2) why is water an amphoteric molecule?
Qno3) why are enzymes called as biocatalysts?
Qno4) why are echinoderms considered closer to chordates than any other phylums?
Qno5) Give reason why a snail and an octopus are classified under the same phylum?
Qno6) why do the walls of trachea not collapse when there is less air in it?
Qno7) why is a closed circulatory system more efficient than an open circulatory system?

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