Which statement best describes evidence that Group 3’s data are less valid than the data for the other two groups?

Im going to need more information in order to answer this question

It it this cuz i haven't done this since 6th grade so i forgot

Answer mass is conserved in living systems through the processes of photosynthesis, cellular respiration, and the carbon cycle,; ; ; also, energy is transferred as matter is transformed from one chemical to another, matter is oxidized to carbon dioxide and water during respiration . energy is transferred as matter is broken down into simpler molecules and some energy is converted and released as heat;