Elie wants to join the basketball team, so he has started running on the weekends to build up his stamina. he monitors his heart rate and finds that he is often reaching 180 beats per minute, but his target heart rate zone is between 142 and 175 beats per minute. what should elie do to improve his workout? a. run more often b. run more quickly c. run more slowly d. run less often

Which statement best describes the role of the artificial heart? the artificial heart is a good replacement option for individuals who do not want a human heart. the artificial heart has been a great option because it can keep patients alive for a very long time. the artificial heart is not a good option because of the high possibility for rejection. the artificial heart has limited usefulness but can prolong life or be a tool to use while waiting for a transplant.