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Nat2105 [25]
3 years ago
15

During a "leap year" we add an extra day to our calendar because:

Biology
1 answer:
nikklg [1K]3 years ago
8 0

Answer:

A.The Earth takes 24 hours to rotate

Explanation:

Since there is an extra day that means an addition of 24hrs

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A reflex, like automatically removing your hand from a hot stove, involves pain messages sent to the spinal cord by way of _____
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Why are vestigial structures are considered examples of<br>homologous structures?​
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If a person had not drunk any water for 8 hours before collecting a sample, would you expect his/her urine to have a high or low
Mrrafil [7]

Answer:

The person’s urine will have a high specific gravity

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7 0
3 years ago
A bacterial infection of the periodontium that causes rapid attatchment loss and poor response to periodontal therapy has a grad
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A bacterial infection of the periodontium that causes rapid attatchment loss and poor response to periodontal therapy has a grade of Aggressive periodontal disease

<h3>Periodontium </h3>

The cementum, gingiva, periodontal ligament (PDL), and alveolar bone make up the complex structure known as the periodontium. The periodontium's main purposes are to protect the underlying structures of the tooth from the oral microflora and to enable the tooth to connect to the bone.

An orthokeratinized or parakeratinized stratified squamous epithelium makes up the gingival epithelium. The gingiva, which has connective tissue and epithelial components, covers the supracrestal root surface and the alveolar bone. As it lines the gingival sulcus close to the tooth surface (enamel or cementum) and subsequently joins to it with hemidesmosomes, the gingival (oral) epithelium develops into the sulcular epithelium and junctional epithelium.

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