​In centers where transportation service is provided, the service must ___.

​What organization has called for all preschool teachers to have a bachelor’s degree?

​In centers serving infants, licensing usually requires   ___.

​The focus of licensing is ____.

​Obtaining a director’s credential is important because ___.

​Programs that are run by the Department of Defense must follow the mandates of ____.

Where does the deep-ocean basin begin along a passive continental margin?

Oceanic crust is predominantly composed of the igneous rock called ________.

Oceanic ridges and rises result from seafloor spreading along ________.

The mid-ocean ridge is entirely volcanic and is composed of ________ lavas characteristic of the oceanic crust.