Pathogenic bacteria require time to multiply in a warm, moist, high protein environment. Generally, they must be in the TDZ more than
to reach
dangerous numbers that can cause foodborne illness.
A. 8 hours
B. 4 hours
C. 2 hours
D. 6 hours

Q1: what are the functions of your teeth and gums? q2: what are three ways that you can prevent problems with your teeth and gums? q3: relating cause and effect - people with periodontal disease sometimes stop brushing their teeth because their gums hurt. what effect do you think this will have on their oral health? explain. q4: evaluating – why do you think some people ignore simple steps such as brushing and flossing that can keep their teeth and gums health