Ascientist is examining the function of macromolecules in a cell. she notices that movement of large molecules into and out of cell is disrupted when she dameges one specific type of maromolecule. which macromolecule has she most likely damaged?

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?