Photovoltaic cells and hydrogen fuel cells share which of the following advantages? I. No emission of air pollutants
II. Abundance of resource
III. Inexpensive compared to other resources

A. II only

B. I only

C. I, II, and III

D. I and II only

Which statement best describes lymph? a. a clear fluid that carries proteins, water, white blood cells, fat, dead cells, and toxins that drain from the fluid between the cells of the body b. a clear fluid in the cells that to secrete and transport hormones from one region of the body to another c. a thick, opaque, and yellowish fluid that is present when there is an infection in the body d. a clear, liquid component of blood that contains red blood cells, white blood cells, platelets, and iron