When conducting a missed approach from the loc/dme rwy 21 approach at pdx?

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 is the correct formula for photosynthesis

Explain the process that creates the heat of the sun?