biology crossword puzzle

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Across
  1. 4. Breaking down organic matter into nutrients.
  2. 7. Trait: Expressed with one dominant allele.
  3. 9. Green pigment vital for photosynthesis.
  4. 10. Organisms evolving to fit environments.
  5. 11. Protein synthesis messenger.
  6. 13. phase 1: Meiosis stage, homologous chromosomes separate.
  7. 15. Interacting species group in an area.
  8. 16. Wall: Rigid plant, fungi, and bacterial supportlayer.
  9. 19. Factors: Living elements influencing ecosystems.
  10. 20. Organism: Thriving without oxygen.
  11. 21. Cell's main energy carrier.
  12. 22. Molecule movement from high to low concentration.
  13. 23. Single-celled microorganisms with varied metabolic abilities.
  14. 25. Pair: DNA nitrogenous bases bonded together.
  15. 27. Early stage of multicellular development.
  16. 28. Respiration Using oxygen for ATP from glucose.
Down
  1. 1. Acids: Protein building blocks.
  2. 2. Basic unit of life.
  3. 3. Cell's interior fluid.
  4. 5. Interacting organisms and environment.
  5. 6. Genetic material carrying instructions.
  6. 8. DNA and protein thread-like structure.
  7. 12. Cell's DNA-containing organelle.
  8. 14. Self-sustaining organism through photosynthesis.
  9. 16. Cycle: Photosynthesis biochemical reactions in chloroplasts.
  10. 17. Variety of life forms in an area.
  11. 18. Site Enzyme's binding spot for reactions.
  12. 20. Diverse photosynthetic aquatic organisms.
  13. 24. Variant gene form on chromosomes.
  14. 26. Factors Non-living elements shaping ecosystem