In a way, this is a double edged sword. On one hand, the animals are needed to best test the effects, but on the other hand it can be seen as very unethical. Honestly, I don't really see a way around using the animals. Unless you get human volunteers, but there is no way to fully make them understand what they are getting themselves into which can turn unethical very, very fast. If all of a sudden one of your human volunteers decides that they do not want to be a part of the test anymore, there is noting you can do to reverse what has already been done.
1 million is 1 x 10^6
1 billion is 1 x 10^9
1 trillion is 1 x 10^12
So 12 trillion miles is 12 x 10^12 which converts to 1.2 x 10^1 x 10^12 = 1.2 x 10^13
C. It led in a mass migration of African Americans to the Midwest.
According to rational consumer choice, the thing that will happen to the optimal quantity of consumption for a good if the price increases is that option c: it will increase.
<h3>What will occur if in response to a fall in its price a consumer buys more of a good?</h3>
The income effect is known to often take place if a reduction in the price of a good tends to increases consumer's real income.
This is known to often making them have the ability to buy more or to purchase all of the goods, so the quantity demanded is known to often increases.
Therefore, According to rational consumer choice, the thing that will happen to the optimal quantity of consumption for a good if the price increases is that option c: it will increase.
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