Who wants tacos I only getting soft but if u want hard I guess I'll get it

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

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?