In 1942, a researcher named Liddell trained a sheep to lift its leg off a shock pad to avoid getting shocked when it heard a tone. He was curious to see whether the sheep made a stimulus-response association or a stimulus-stimulus association. To test which association the sheep made, he turned the sheep upside down and rather than its leg on the shock pad, he placed the sheep’s head on the shock pad. When he presented a tone, the sheep lifted its head! What type of association did the sheep make?

As molecules are formed from metabolism, entropy __ and the universe becomes less disordered. a. is decreased b. is increased c. moves closer to equilibrium d. is unchanged

What do transitional fossils best support?

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.