Cells reasons for shape and things

Plz fast 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 crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

What in scientific term why the salty popcorn causes this thirst

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.