The pressure needed to pump blood back to the heart is produced by the

heart
body muscles
contracting arteries

Dna replication or repair occurs in a cell in all of thw following situations except when

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?

Which of the following forest management practices is best for reestablishing areas of forest?