I believe it would be the bottleneck effect. hope that helps =)
The human foot has two arches, but the chimpanzee foot has only one.
I would just survey whoever is in my house. And I will be honest I have no idea what the survey is about but obviously your school (k12 maybe?) would not expect you to go around the neighborhood asking random people where their knuckle hair is located. All I can say Is try your best. Hope this helped. XD
You did it right you got it all right
