At the beginning of the 1850s, despite sectional friction, no one thought the United States would be engaged in a civil war between the North and the South by the end of the decade. What events in the 1850s made southern secession and civil war more likely? Which may have constituted a “tipping point” after which secession and war were difficult, if not impossible, to avoid? Please respond in an answer befitting an AP student.

Idon’t understand 8. plz ! we are finding the area of polygons. thx in advance!

An organization has been collecting data and learned that they are selling their products to an increasingly younger group of people. with what can this data ? forecasting going green globalization internal influence

20 pts i don't really get this xd1. what is the function in humans of the protein produced from that gene2. would you expect to find the same protein in other organisms? if so, which ones? 3. is it possible to find the same gene in two diff. kinds of organisms4. if you found the same gene in all organisms you test, what does this esuggest about the evolution of this gene in the history of life on earth? 5. does the use of dna sequences in the study of evolutionary relationships mean that other characteristics are unimportant in such studies? explain your answer. what am i supposed to do here