Alena realise that students in her cape biology class have variation in their heights, shoes size, ability to roll their tongues and that some students have attached earlobes while others have detached earlobes. Plan and design an experiment to assess the observation

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water. b. they use chlorophyll and oxygen to make carbon dioxide and water. c. they use sunlight, water, and carbon dioxide to make sugars. d. they use sunlight, water, and oxygen to make chlorophyll.