A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants. The independent variable in this experiment is the 1. air temperature at which the corn plants were grown amount of carbon dioxide used by the corn plants volume of oxygen produced by the corn plants number of corn plants used

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.