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leva [86]
3 years ago
6

Which type of lens can be rotated to select different magnifications?

Biology
1 answer:
stich3 [128]3 years ago
4 0

Answer:

objective lenses

Explanation:

objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.

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B. polio—polyhedral shape

Explanation:

A virus is a small parasite which cannot self reproduce. For a virus to produce more viruses, it uses the cell to duplicate itself. Viruses contain RNA or DNA as their genetic material.

Poliovirus is composed of an RNA genetic material and it is responsible for Polio. Polio leads to paralysis and is transmitted through contaminated water or food, or contact with an infected person.

The shape of Poliovirus is formed by polyhedral (many-sided) shell or capsid.

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