The model shows the hierarchical organization of the human nervous system. Select the level of organization that is a group of tissues working together.(35 points!)

Which conditions need to be in balance for cells to function? check all that apply. blood sugar food intake body water body temperature body mass

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.

What maintain homeostasis when a persons internal body temperature is 97.5°f