Which body system works with your digestive system to push your food along through your intestines

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.