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Across
  1. 4. A type of flower that blooms in spring.
  2. 12. The world of plants, animals, and the environment.
  3. 13. A hormone that helps plants grow taller and produce flowers.
  4. 15. Plants that bloom depending on the length of day and night.
  5. 16. The process plants use sunlight to make food.
  6. 19. A resting stage that plants go through during winter.
  7. 20. Clues from the environment that tell plants when to grow.
Down
  1. 1. Yellow flowers that often bloom after cold weather.
  2. 2. The process of needing cold before a plant can bloom.
  3. 3. Chemicals in plants that help them grow and bloom.
  4. 5. Light from the sun that helps plants make food.
  5. 6. The cold season before spring.
  6. 7. How hot or cold the air is, which affects plant growth.
  7. 8. Something plants need to grow, coming from the sun.
  8. 9. Heat that helps flowers start to bloom.
  9. 10. Plants that bloom and show colorful petals in spring.
  10. 11. Bees and other creatures that help plants make seeds.
  11. 14. Small parts of a plant that will grow into flowers.
  12. 17. The season when many flowers start to bloom.
  13. 18. The process of a flower opening up.