You are watching a rat pressing a lever in a skinner box to obtain food pellets. the rat is pressing the lever at a slow, steady rate, but it does not stop, even when a food pellet is delivered. in this example, the reinforcement schedule that is in place is most likely:
a. a variable-ratio schedule.
b. a fixed-interval schedule.
c. a variable-interval schedule.
d. a fixed-ratio schedule.

Which of the following will increase a population's growth rate? read the following scenario and answer the question(s) below. population growth is at the root of many serious environmental problems. from the ancient babylonians thousands of years ago, to thomas malthus two centuries ago, to present day neo-malthusians, humans seem to possess an awareness of earth's limitations in the face of growing populations. today, our ability to accurately quantify and monitor population growth is very sophisticated. we can measure growth and make predictions about world growth with mathematical and computer models. despite long-lasting, rapid global population growth that is only recently starting to show signs of slowing, we have thus far been able to avoid global catastrophe. can we continue to avoid disaster? which of the following will increase a population's growth rate? increased urbanization increased industrialization increased immigration decreased immigration increased emigratio

What greek scientist created a screw to move water for irrigation?

Epicureanism advocated reason and duty. select the best answer from the choices provided t f