45. What best explains the rise of “mixed farming” that developed in Northern Europe? a.Expanding commercial networks al

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45. What best explains the rise of “mixed farming” thatdeveloped in Northern Europe?
a.Expanding commercial networks allowed for European farmers toimport more animals like horses and oxen to help plow theirfields.
b.Crop rotation made farming more productive and allowed farmersto use fewer animals.
c..Northern Europeans increasingly turned away from agriculturalfarming in favor of raising livestock exclusively.
d..New technologies made animals easier to domesticate, andanimals in turn provided more manure for soil and power forharvesting than farmers had had before.
e. Northern Europe naturally had more animals available fordomestication than other regions because of the crops they grew andthe local soil quality.
46. Between 1000 and 1500 the population of the Americasincreased by approximately how much?
a. 10 million
b. 20 million
c. 30 million
d. 50 million
e. 70 million
47. What conclusion can be drawn about humans and theirancestors?
a.The many differences we see between humans and other primatestoday are evidence that evolution has sped up in recent years.
b. Despite the many differences we see between humans andprimates such as chimpanzees, those differences actually areexplained by genetic variations of less than 1.6 percent.
c. Humans will continue to evolve to the point that we shareless than 98.4 percent of genetic materials with chimps.
d. Humans will likely continue to evolve and have branches thatgo extinct until we have only two similar groups, much likechimpanzees of today.
e. Evolution will eventually cause humans to return to thesea.
48.
Hominins are the only creatures to ever have controlledfire.
True
False
49. Athens’s democracy ensured that it was more peacefuland went to war less than other city-states.
True
False