North of the Us, Canada, has a 3.96 billion year old U-shaped subsection named The Canadian Shield. The Canadian Shield signifies the greatest glacial impact, or scraping down to bare rock.
Answer:
Even ones much older than he was.
Explanation:
Cook was ambitious and quickly is the claim and even once much older than he was is the evidence for the claim.
The last choice, "Teens who sleep less than 5 hours a night suffer from more immune related illnesses according to a study released in 2015 by the American Journal of Medicine." It gives a source to where the information had been gathered.
Answer:
i 99/100 think its the first one.