This sentence is from the passage. "How did the cranes navigate and negotiate their
five-thousand-kilometer journey from Texas or Mexico
to come home to their own pingo out of thousands of
others scattered throughout the vast and seemingly
unending Alaskan taiga?" (Paragraph 3)
How does this sentence most contribute to the power
of the author's message?

answer: we need to see the ads : )

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.

cause they were to dumb to get their college education to become a real   : )

because he was killed by the black arrow.