Biotechnology is a growing field of applied biology. Many crops, such as corn, have been engineered to be resistant to herbicides. Therefore, farmers can spray these chemicals to kill weeds growing near the crops without worries of killing the crop itself. How does this type of biotechnology work?
A.
by changing the type of crops used
B.
by causing the crops to kill the weeds
C.
by changing the location of the crops
D.
by changing the genetic makeup of the crops