Answer:
D None of the above
Explanation:
Social class:
It is a class where a group of people lives in a society with no difference between the social-economic status of people. It can be described as where a group of people shared their SES and this group has been used in research and censused of a country. The word class has come in the 19th century before this word-class there was a present word like rank, order that categorizes the social status of a group of people.
Carl Marx, Max Weber, these were the sociologist who worked on the society. There is such type of class status:
The answer is A. But to be a little more specific, the 18th century as actually 1701-1800.
The envelope structure of certain flu viruses and bacteriophages is based on icosahedral rotational symmetry.
The virus's capsid shields the nucleic acid from the outside world, and some viruses encase their capsids in a membrane envelope.
The majority of viruses have icosahedral or helical capsid forms, but some have complex virion architecture. To increase the size of the capsid, icosahedral viruses increase the number of structural units in each face. A 20-sided geometric shape called an icosahedron is made up of equilateral triangles on each of its 20 sides.
<u>Because icosahedral rotational symmetry makes it easier for viruses to grow and protect their genetic material, it allows them to infect and repeat their RNA on hosts more easily in the future</u>.
Learn more about viruses, here :
brainly.com/question/18451282
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Answer:
Hello, and you have a good day.