Which of the following describes the authors main purpose in the text?
A. To provide information about how humans can cut down on their CO2 emissions
B. To suggest that some people are still skeptical about the effect of CO2 on global warming
C. To explain how scientist were able to prove the link between CO2 and global warming
D. To prove that CO2 emissions are the biggest contributors to global warming
Please help

The empire state building was a. constructed by one hundred workers. b. was first lit up by president roosevelt. c. has more than one hundred stories. d took several years to complete.

Which passage from kennedy's inaugural address is an example of an allusion? to our sister republics south of our border, we offer a special pledge-to convert our good words into good deeds-ir new alliance for progress but this peaceful revolution of hope cannot become the prey of hostile powers a call to bear the burden of a long twilight struggle, year in and year out, rejpicing in hope patent in tribulation it a free society cannot the many who are poor, it cannot save the few who are rich

In edgar allan poe’s “the raven,” what does the speaker see when he responds to the raven’s tapping by opening the door?