Damage to the resulted in monkeys being unable to perform a once familiar response, specifically pushing in a lever and then turning it to the left. this result suggests that this brain area is involved in executing well-learned sequences of motor responses. a. prefrontal lobe b. premotor cortex c. common integrative area d. supplementary motor area

What type of competition exsist between two species. turtles and fish

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.