White blood cells have an important function in the human immune system. they leave the blood stream and attack and engulf invading bacteria and fungi. how do white blood cells move when outside of the blood stream

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?