Which states have no oil or gas production?

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?

What processes take place before the mature mrna exits the nucleus?

Vessels draining the myocardium of the heart, open primarily ,into which chamber?