Organisms that cannot make their own food and must obtain energy from external sources are

Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain

What are some of the immune functions of the lymphatic system? a. cleaning red blood cells from the blood and creating lymph fluids b.transporting lymph to the tissues and creating lymph fluids c.removing infectious agents and making white blood cells d.making red blood cells and removing infectious agents

Which step is the same in both forms of fermentation, as well as in cellular respiration?