The bottom half please ?

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

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?