Maia’s family has a history of heart disease. what can she do to lower her chance of having heart disease?

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 of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Are the layers of rock above and below the coal older or younger?