What is smog? The answer choices are in the picture below...

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.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?