Factors That Affect Plant Growth

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Across
  1. 2. I am a combination of two things in one.
  2. 4. I am the practice of planting different crops in fields every other year (or so).
  3. 5. I am a word that describes all of the food collected, usually in autumn.
  4. 7. I am what is found in fertilizer. Common types of me are nitrogen, potassium, and phosphorus.
  5. 9. Plant leaves absorb me. It takes me 8 minutes to get from my source to Earth.
  6. 10. Many people add me to the soil, so plants have nutrients.
  7. 11. I am a gas produced by plants. Animals need me.
  8. 14. I am a gas produced by animals. Plants need me.
  9. 16. I am the organelle in plant cells that collects sunlight.
  10. 17. I describe the factors inside a plant's DNA that affect its growth.
Down
  1. 1. I am water that falls from the sky as rain, sleet, snow, or hail.
  2. 3. I am the process by which plants make food & produce oxygen.
  3. 6. Plants typically grow best when I'm warm during the day & slightly cool at night.
  4. 8. I am the green pigment in chloroplasts & most plant cells.
  5. 9. I hold nutrients for plants. Iowa has some of the best in the world.
  6. 12. I describe the "outside" factors that affect plant growth.
  7. 13. I am how farmers measure their yields in autumn. I'm a basket.
  8. 15. I am an area of land that farmers use. One of me is about the same size as a football field.