When people exercise, their body cells build up more waste quickly. Which two body systems work together to remove these wastes from their cells? (1) immune and endocrine (3) respiratory and circulatory (2) digestive and skeletal (4) circulatory and digestive
respiratory and circulatory systems work hand in hand to expel wastes. respiratory system removes CO2 and the circulatory uses the blood as a medium to move excess salts and water from source to sink.