10. Which of the following is NOT an example of operant conditioning?
a teaching two pigeons how to play ping-pong
b. measuring how many times a rat pushes a lever to get a pellet of food
c. measuring the heart rate of a man when he sees a girl enter the room
d teaching a dog to catch a Frisbee
HURRR

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

What is a photon? a. part of a ribosome b. a light particle c. a carbon dioxide molecule d. part of a chloroplast b.a light particle

Explain the process that creates the heat of the sun?