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marginal revenue is additional cost you accrue to produce extra stuff
</span><span>marginal benefit is the gain you get for doing anything extra</span><span />
I guess it didn't go so well the price of Pearl's go for a pretty penny I don't know what happened with the situation but my guess would be it probably didn't go well as they thought.
The development of spoken language might have influenced the religious beliefs of Stone Age people, as <span>B. Spoken language would have allowed religious beliefs to spread more quickly. Although the spoken language may have made people more suspicious of outsiders, it would not necessarily mean that that suspicion would influence their religious belief, so not A. Although spoken language would eventually create a new class of religious leaders, it would probably not have influenced everybody, as not all people would have the same amount of articulation, so not C. And not D, as cave paintings would have been a form of visual communication.</span>
Answer:
yay......................
