If a persons kidney fails, why is he or she hooked up to a dialysis machine?
•to add chemicals to the blood not being supplied to the kidneys.
•to test the blood for signs of disease.
•to remove wastes building up in the blood.
•to add blood cells for enhancement of oxygen transport to body cells.
just say a, b, c, or d .

What are some natural processes that represent physical and chemical changes?

How does photosynthesis show the conservation of mass and energy?

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit