If it is not watered, a tulip plant wilts because it

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

What is the inability of an individual or a society to achieve a minimum standard of living known as ?

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.