In Pavlovâs original experiments, a conditioned response that had been extinguished was seen again when the was delivered again. This reappearance of the conditioned response is known as .
a. unconditioned stimulus; spontaneous recovery
b. conditioned stimulus; reverse extinction
c. conditioned stimulus; spontaneous recovery
d. unconditioned stimulus; reverse extinction

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey