AH 2.2a) Human Evolution

What is the estimated increase in cases where the baby cannot fit down the birth canal from the 1960s to today?

• From 30 in 1,000 to 36 in 1,000

• From 20 in 1,000 to 40 in 1,000

• From 25 in 1,000 to 35 in 1,000

• From 10 in 1,000 to 50 in 1,000

What evolutionary question does Dr. Philipp Mitteroecker address in the study?

• Why the human pelvis has not grown wider over the years

• Why Caesarean sections are increasing

• Why newborns are getting larger

• Why diabetes affects birth rates

The research on Caesarean births and human evolution was published in the journal, Proceedings of the National Academy of ______.

According to the passage, what is one reason for the increase in Caesarean sections?

• Increase in diabetes and obesity

• Larger newborns

• Narrower pelvis size

• Cultural preferences

The study found that the global rate of cases where the baby could not fit through the maternal birth canal was originally 3%, or ___ in 1,000 births.