Curious carl, a biology major, conducted research on the daily habits of black bears. one topic of interest was the bears' diet. living in the woods, carl was able to record the daily diet of five bears around his cabin and at the nearby stream. after a year of observation, carl summarized his findings in the graph. carl concluded that all bears preferred a diet of plant materials to a diet of meat and fish. all but one comment regarding carl's conclusion are true. that is, curious carl, a biology major, conducted research on the daily habits of black bears. one topic of interest was the bears' diet. living in the woods, carl was able to record the daily diet of five bears around his cabin and at the nearby stream. after a year of observation, carl summarized his findings in the graph. carl concluded that all bears preferred a diet of plant materials to a diet of meat and fish. all but one comment regarding carl's conclusion are true. that is,