The pterosaur adapted to flight with ____.
A)a membrane-covered hand-like structure with an elongated fourth finger
B)bird-like wings covered with hollow feathers
C)bird-like wings with no covering
D)bat-like wings covered with thick fur
E)bat-like wings with no covering
Question 2
Water in waves is displaced from the circular orbits when ____.
A)waves enter progressively shallower water
B)seas become swells
C)waves reach great heights
D)waves reach great lengths
E)winds reach a critical velocity