In phase 1 of a choice experiment involving concurrent vi schedules, a human subject receives 25% of his reinforcers by making a left response. in phase 2, he receives 75% of his reinforcers by making a left response. the subject’s percentage of left responses is actually 25% in phase 1, and 75% in phase 2. this performance is an example

In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of a postzygotic barrier the founder effect sympatric speciation a prezygotic barrier

Give me 5 solid reasons why death penalty should be remove?for debate!

A“carpetbagger” would have been most likely to come from which state?