<span>Sexual reproduction INCREASES variation and selective breeding DECREASES variation.
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John Maynard Keynes (A), Adam Smith (C), and Karl Marx (D) are all famous historical figures. However, Sigmund Freud was not an economist but instead was a famous psychologist.
There was an estimated 6 million cars on the road in 1930.
<span>Mostly to fight the Soviets which had occupied Afghanistan. He used his personal connections and wealth to supply resistance against the Soviets there and had even gone on to fight with them. He was also disgusted by Saudi Arabia's apparent reliance on the West.</span>
A secondary source is a textbook