Summarize how to read a chemic formula and give an example ​

How many people in the world’s economy work in “system d”?

Which best describes the purpose of the south carolina exposition and protest, which was written by john c. calhoun? a) to explain why the south was nullifying the tariff of 1828 b) to describe the ways the tariff of 1828 would southerners c) to persuade northern states to rebel against the federal government d) to ask england for if the south decided to secede from the union

Explain what commentary austen is making about social conversation based on this excerpt. your answer should be at least 150 words.