Why do some animals eat their own kind​

Which of the following is a macronutrient? carbohydrates lipids amino acids 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.

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?