Which description best fits the role of macrophages? Macrophages make T cells. Macrophages make memory cells. Macrophages trigger allergies. Macrophages engulf pathogens.

(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.

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis