If a product contains bleach (peroxide), it will whiten your teeth. But not all treatments are created equal. It's the concentration or percent of hydrogen peroxide a teeth-whitening system contains and the amount of time it's in contact with your teeth that determines its effectiveness.
Definition of fecund - producing or capable of producing an abundance of offspring or new growth; highly fertile Definition of fecund - producing or capable of producing an abundance of offspring or new growth; highly fertile
filth - an offensive or indecent word or phrase. dirty word, vulgarism, obscenity, smut. fuck, fucking, nookie, nooky, piece of ass, piece of tail, roll in the hay, screwing, shtup, ass, shag, screw - slang for sexual intercourse.