Plz someone help me out ❤️

What process is believed to be responsible for the formation of the grand canyon? a) diverging tectonic plates b) converging tectonic plates c) erosion over a long period of time d) caving in of the ground due to erosion

All of the following physical reactions occur when our fight-or-flight response is triggered  except  a.dilating pupilsb.increasing heartbeatc.increasing digestiond.increasing perspiration  select the best answer from the choices providedabcd

In a person dependent on a drug, occurs when the drug leaves his or her system quickly or for a prolonged period of time. a. addiction b. withdrawal c. independence d. relapse