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Across 2. Changes in daylight and ________________ signal the trees to stop producing chlorophyll. 4. This aids in photosynthesis and keeps leaves green. 5. What leaves do once they have fallen off the tree. This process restocks the soil with nutrients. 8. This gives leaves their red color. 11. A tree that has bears cones and has needles. These trees do not shed their needles annually. 13. This is the part of a deciduous tree that can freeze in winter if they were not dropped. 14. A key used to identify something by deciding between two choices. 15. A type of leaf edge that has large rounded parts.

Down 1. This gives leaves their yellow, orange or brown colors. 3. This is the chemical reaction that enables plants to use sunlight to manufacture sugars for their food 6. The part of the leaf that gives it support, and carries water or nutrients throughout the tree. 7. What the needles of coniferous trees are covered with to prevent them from freezing. 9. A tree that sheds all of its leaves annually. 10. A type of leaf edge that is smooth and has no wavy or rough edges. 12. The shape of a leaf that has more than 3 lobes, and looks similar to an outstretched hand.