A.The number of roles human beings play is much more than that of insects.B.The roles human beings play is more important.C.The insects have fewer opportunities to change their roles.D.Different individual performs different functions in human society but not the case in insect society.
A.The number of roles human beings play is much more than that of insects.
B.The roles human beings play is more important.
C.The insects have fewer opportunities to change their roles.
D.Different individual performs different functions in human society but not the case in insect society.