B) is the correct answer. The flu virus does not have the same genetic makeup each year as with each individual it infects its rapidly mutating.
Answer:
It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers
Answer:
Intestine is the lower part of the alimentary canal from the end of the stomach to the anus.
Explanation:
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A carbon atom can form a maximum of 4 single covalent bonds
