Answer:
Researchers finally isolated the virus that causes flu from pigs in 1931, and from humans in 1933.
Explanation:
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They were folloing heards of food during the Ice Age, so the answer is C.
<h2><em>who was the first u.s. president with a beard while in office?</em></h2>
- <em><u>John Quincy Adams</u> (1825–1829) was the first U.S. president to have notable facial hair, with long sideburns.</em>
<em>hope </em><em>it</em><em> helps</em>
Answer:
Christopher Columbus may have stumbled upon the Americas, but his accidental discovery has changed the course of history.
The Italian explorer's travels bridged the gap between Europe and the New World, but his curiosity also marked the beginning of centuries of transatlantic colonization.
The Louisiana Purchase, which was purchased by the United States from France, greatly impacted the development of the US in that it gave the US a large area of land for extremely cheap.