The brown stuff is called plaque. This forms on your teeth when you eat and its something you can't get rid of. There is tooth paste that can help maintain it.
Public speaking gives an advantage to their personal, social, and professional life. :)
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The answer should be “Tobacco”
Take time to evaluate her exercise ability.
Self concept is best defined as a combination of self-image, self esteem and your ideal self. ... Your self concept can change on a regular basis because you see and interpret things differently depending on your feelings, beliefs and attitude.