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
nourish. verb. 1. feed, supply, sustain, nurture The food the mother eats nourishes both her and her baby. 2. encourage, support, maintain, promote, sustain, foster, cultivate This attitude has been carefully nourished by a small group of journalists and scholars.