After a long soccer practice, Jack felt his pulse increase. As he cooled down, his pulse began to slow. Since he’d been studying
the circulatory system in science class, he knew why his pulse slowed. Which statement best describes what’s happening in Jack’s body right after soccer practice?
The rapid speciation of mammals as a result of the availability of new habitat due to the extinction of the dinosaurs 65 million years ago is an example of adaptive radiation.
