How do most animals produce carbon dioxide? O A. By buming fossil fuels
O B. By photosynthesis
O C. By cellular respiration
O D. By eating plants

Kidney stones are tiny crystals of calcium or magnesium that block the narrow sections of the excretory system. which symptoms would a person with kidney stones experience? a. inability to store urine; pain in the bladder b. inability to store urine; pain in the urethra c. reduced urine flow; pain in the bladder d. reduced urine flow; pain in the urethra