What aids with mitosis/ cell division?

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Depending on the organism the number of in a cell may change

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.