Which structures are found in all cells? Select two options. A. Chloroplasts
B. Lysosomes
C. Cell wall
D. Cytoplasm
E. Cell membrane

An easy way to calculate the amount of energy available at each level is to what?

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.

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols