What is atp, and when is energy released from it

What is the difference between bacterial infections and viral infections?

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.