What does it mean if the Air quality index value (AQI) is 125 for a particular day? What is considered to be a good index value for ozone?

Plss answer

*will mark brainliest to the first and correct answer less species diversity results in less a. oxygen b. food c. drinkable water d. all of the above

Place the steps tor the formation of the enzyme pepsinogen in correct order

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.