Fact : #6

                                                 Autumn leaves  

• Leaves are green because they contain a substance called chlorophyll.

• Green plants use chlorophyll to transform sunlight into energy, in a prosses called photosynthesis.

• In the fall, the weather starts to cool off.

• Days get shorter and there are fewer hours of sunlight, because of that, there isn't enough light or water for photosynthesis, so trees stop producing chlorophyll.

• As the chlorophyll begins to break down, we begin to see two different pigments called carotenoids and anthocyanins.

• Carotenoids produce yellow, orange, and brown colors.

• anthocyanins produce colors like red, purple, and pink.

• In the fall, when trees sense a change in the weather, they change colors.