The head of a human offspring turns down and prepares to enter the birth canal during
a. the first trimester
b. the second trimester
c. the third trimester
d. birth

The child turns its head towards the birth canal during:
C. the third trimester
Other changes that occur during the third trimester of pregnancy are that the baby starts to practice breathing, develops a complete nervous system and skeletal system, starts detecting light and many other things.

Three reasons of the deaths of native americans: new illnesses that their immune systems couldn't cope with. genocides so the settlers could have the good land.starvation from lack of rations and poor infertile land on resevations