The land surface beneath a moving continental ice sheet can be molded into smooth elongated forms called drumlins (see figure 12.23 in your text).
(The land surface beneath a moving continental ice sheet; can be molded; into smooth elongated forms) (smooth elongated forms; called; drumlins (see)
The land surface beneath a moving continental ice sheet smooth elongated forms
can be molded called
into smooth elongated forms
drumlins (see