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MakcuM [25]
3 years ago
12

When plaque becomes heavy and hardened, it is called dental calculus or _________.

Biology
1 answer:
djverab [1.8K]3 years ago
3 0

Answer:

Tartar.

Explanation:

Dental plaque may be defined as the development of mass or biofilm of bacteria that grows on teeth surface. This plaque may present on teeth, between the teeth and on teeth front.

The plaque is first colorless but when it changes to dental calculus or tartar, the color of plaque becomes yellow or pale brown. This causes dental problem and different dental disease.

Thus, the answer is plaque.

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Learning Task No. 2: Copy and complete each statement. Choose from the
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1. Aorta

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Explanation:

The aorta is the main artery of the body that carries the oxygen-rich blood to all the body parts except the lungs from the left ventricle. It is divided into main coronary arteries or blood vessels.

The left atrium is one of the heart chambers, it is located in the upper part of the heart on the right side that receives the oxygenated blood from the lungs through the pulmonary vein.

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8 0
2 years ago
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scZoUnD [109]

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proteins; purify; expression

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7 0
2 years ago
Which element has a total of 7 atoms present in the formula C6H5NH2?
marusya05 [52]

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Explanation:

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6 0
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