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1. State two causes of tooth decay.
2. State two ways of preventing tooth decay.
3. Name three pieces of equipment used for harvesting fish from a pond.
4. The stocking rate of fingerlings in a fish pond is 300 fingerlings per 150 square meters. How many fingerlings are required for a pond measuring 25 m x 10 m?
5. Draw and label a mercury-in-glass thermometer.
6. Explain why it is not advisable to sterilize a clinical thermometer using boiling water.
7. Explain the term "hand mating" as applied to livestock breeding.
8. State two advantages of the hand mating method of breeding livestock.

Sagot :

GinnyAnsweridn

Final answer:

Microbes like Streptococcus mutans contribute to tooth decay by producing acid and forming plaque. Prevention methods include regular brushing and reducing sugar intake.


Explanation:

Microbial Contribution to Tooth Decay:

  1. Acid Production: Bacteria in the mouth produce acid that erodes tooth enamel.
  2. Plaque Formation: Bacteria form plaque, leading to decay.

Cariogenic Bacteria:

  • Most Important Species: Streptococcus mutans is the primary cariogenic species of bacteria.

Prevention Methods for Tooth Decay:

  1. Regular Brushing: Brushing teeth twice a day helps remove bacteria.
  2. Reducing Sugar Intake: Limiting sugary foods can prevent decay.

Learn more about Tooth decay and microbial contribution here:

https://brainly.com/question/43186356


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