Answer:
B. nuclease (destroys DNA and RNA)
Explanation:
Viruses are the particles that contain a protein coat called the capsid. Inside the capsid, viruses have their genetic material. Viruses may have single-stranded or double-stranded DNA molecules or single-stranded or double-stranded RNA molecules as their genetic material. Therefore, to destroy viruses, one must target their genetic material. Nucleases are enzymes that digest nucleic acids (DNA and RNA). The use of nucleases would destroy the genetic material of viruses and would be most effective to control them.
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Answer: Option A.
Explanation:
Feathers are the epidermal growths which form the distinctive outer covering, or plumage of birds and several other vertebrates.
The major function of feather is to provide heat to the body which is possible by two ways light insulation (radiation) and conduction. In light insulation, feather of birds have the property of light scattering that allows to diffuse thermal radiation to keep the body of birds warm, results in heat conservation while in conduction, layer of air is trapped in the furs of feather which slowly heated the bodies of animals or birds.
Hence, the correct option is A.
