Draw a trophic pyramid using the animals in the Chesapeake Bay ecosystem. Include the percentage of energy at each
level. In your drawing, include the names of the species for each trophic level.

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

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 factors contribute to the effect an environmental toxin has on the human body?