Explain these topics: o specie circular o tariffs of 1828 and 1832 o gibbons v. ogden o mcculloch vs. maryland o bank war

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.  

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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how is this a question? but yes, they were. if i recall correctly, it was very handy for native americans to use buffalo skin.

the answer is c. baby boomers are the largest generation and have already begun reaching retirement age.

that is the the answer on e20 , brainliest ? ?