What is the name of the deepest layer of earth, which is made of solid metals? a- outer core b- inner core c- mantle d- crust

Describe the function of the endomembrane system? what organelles are involved?

Currents are caused by temperature and density differences

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