Whats the difference among herbivore, carnivore, omnivore, detritivore and decomposer

Wich organism obtains its energy from dead or decaying matter

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?