Identify the positive and negative controls used in this experiment. explain how each of these controls are used, and why they are necessary to validate the experimental results

Greenthe fossil record is the history of life recorded byhuman observationgod. climatologists. remains of the past.

Which type of respiration takes place when there is no oxygen present

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?