Q/A
1) What role do Villi perform in the small intestine?
2) What is plaque?
3) What is sericulture?
4) Mention two uses of conductors of heat.
Answers
Answer:
1)The villi of the small intestine project into the intestinal cavity, greatly increasing the surface area for food absorption and adding digestive secretions.
2)Plaque is a sticky film of bacteria that constantly forms on teeth. Bacteria in plaque produce acids after you eat or drink. These acids can destroy tooth enamel and cause cavities and gingivitis (gum disease). Plaque can also develop under the gums on tooth roots and break down the bones that support teeth.
3)the production of silk and the rearing of silkworms for this purpose.
4)Aluminum, copper and stainless steel are good heat conductors as they are metals, They are used in making cooking pots and the kettles that are used in the houses and the factories.
Explanation:
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