<span>b. the Germans’ use of unrestricted submarine warfare-because the Germans sank many of America's non-military ships using submarines</span>
Answer:
it introduced new products into their lives
Explanation:
The Colombian exchange took goods from Europe and sent them to the Americas and Africa, in exchange for some of their products. This also helped to better communicate ideas from one place to another. This would also help to get inventions from one place to another and spread it throughout the world. The Americans sent corn over to Europe, which is now a widely eaten vegetable.
Answer:
Lots of people living close together.
Explanation:
1859 - Natural Selection - Charles Darwin wrote “On the Origin of Species by Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life
1865 - Heredity Transmitted in Units - Gregor Mendel’s experiments on peas demonstrate that heredity is transmitted in discrete units. The understanding that genes remain distinct entities even if the characteristics of parents appear to blend in their children explains how natural selection could work and provides support for Darwin’s proposal.
1869 - DNA Isolated - Frederick Miescher isolates DNA from cells for the first time and calls it “nuclein
i think any of will work
