It allows memory b cells to remember the virus and that makes the virus completely immune. So, if there were a real situation in which the individual got the real form of the virus, then the immune system would act quickly in neutralizing the situation; hence, why vaccines are very important.
Is this k12 if so I can help you I have already took this
Answer:
An astrolabe is an ancient tool used in solving problems that involve time and the position of the Sun and stars. Astrolabes can be used in timekeeping, surveying, geography, and astronomy to name a few disciplines. One of its most well-known uses is navigation.
Explanation:
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Capitalists control free enterprise that mean a communists countries control economy so it would be A
The correct answer is C. An online encyclopedia article about Franklin Roosevelt.
Explanation
A secondary source is a type of information source that is characterized by documents in which primary sources are analyzed, translated, syntetized, and reorganizated by a third-party. In other words, the secondary source is content that was produced from a primary source. Examples of secondary sources are biographies, translations, articles, among others. According to the above, it can be inferred that the correct answer is C. An online encyclopedia article about Franklin Roosevelt since the author of this article surely relied on primary sources to write it.