In order to learn more about a rare disease, a doctor uses a computer to talk to another doctor halfway around the world. This technology trend in medicine is known as

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?