Which sentence is punctuated correctly?
me
a. in first-period biology class we learned that, the ecosystem, is a fragile and sensitive thing.
b. the freshman, were excited to hear about extra-credit opportunities in their algebra class.
c. getting her license proved to be more difficult and tricky, than she thought it would be.
d. in order to serve students best, school districts need to ask for additional funding.

Study the map below. based on the information shown on this map, which ofthe following locations served as an eastern border for the mongol empire?

Read this excerpt from "we shall overcome." hundreds of thousands of people sang them. but sometimes, it was one lone person with a guitar. they sang in segregated bus stations, picket lines, freedom marches, concert stadiums, city squares, and videos. when injustice of oppression threatens, people sing protest songs to proclaim their resistance, publicize their cause, and encourage hope for a better future, based on this excerpt as an introductory paragraph, which of the following would you expect to read about in the article? different groups of people who were oppressed the ways that music brings diverse groups of people together similarities between historical movements that provided rights for groups of people different song styles throughout specific historical events

Hurry need it ! 35 points in achebe’s things fall apart, the igbo people live in a patriarchal society; accordingly, they worship several different gods all property and authority belong to men all business transactions are done by barter they live under the authority of a foreign ruler