Why should you use a control during an experiment? a. to maintain order b. to provide a greater certainty that the observed results are not by chance c. to keep data d. to have an interesting experiment that is easily repeated

Convert 9.75 millimeters to centimeters.centimeters

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

The model illustrates a process by which a substance is taken up by a cell