Leopold asks his pediatrician how many hours of sleep his young child should be getting each night. he is told that hours of sleep is essential for the child.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.

answer; dr.black,who allows only certain individuals to mate;

a)apline.     glad to ! : )

answer; the people,; the elected officials;