1st Semester Biology Crossword

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Across
  1. 4. The O in CO2
  2. 5. A "snap shot" of the the conditions at a given time.
  3. 10. Scientists gather this.
  4. 11. Eats everything.
  5. 12. Another name for a heterotroph.
  6. 14. A group of similar organisms that can breed and produce fertile offspring.
  7. 15. Defined by temperature, precipitation, latitude, abiotic and biotic factors.
  8. 16. Atoms of the same element with different amounts of neutrons.
  9. 23. Negatively charged particles.
  10. 24. Dry
  11. 25. All life on Earth.
  12. 26. Elements that organisms need to sustain life.
  13. 27. The basic unit of matter.
  14. 28. A turkey vulture is this.
  15. 29. Only eats meat.
  16. 32. 2.2lbs
  17. 33. They store energy, form important parts of biological membranes and waterproof coverings.
  18. 36. An assemblage of different populations that live together in a defined area.
  19. 38. Atoms with a positive or negative charge.
  20. 40. A pure substance made entirely of only one atom.
  21. 41. All scientists worldwide use this system.
  22. 43. The long-term average temperature, precipitation, and extreme weather events for an area.
  23. 44. Only eats plants.
  24. 46. Can be phyto- or zoo-
  25. 48. A chart that shows the average temperature and precipitation for a location throughout the year.
  26. 49. 78% of the air
  27. 50. What can happen if too many nutrients seep into bodies of water.
Down
  1. 1. When individuals move out of a range to somewhere else.
  2. 2. Mushrooms are these.
  3. 3. Earthworms are this.
  4. 6. The atomic symbol for this element is P
  5. 7. A section of the textbook that has definitions of vocabulary.
  6. 8. Organisms use these to store and release energy, structural support and protection.
  7. 9. The center of an atom or "the brain" of the cell.
  8. 13. The zone at the bottom of any body of water with mud, sediments, etc.
  9. 15. A personal, rather than scientific, point of view for, or against, something.
  10. 16. When individuals move into a range from elsewhere.
  11. 17. The total amount of living tissue within a given trophic level.
  12. 18. A tentative scientific explanation that can be tested by further observation or by experimentation.
  13. 19. A compound that produces OH- in solution.
  14. 20. Living
  15. 21. A solution with a pH of exactly 7.
  16. 22. Non-living
  17. 30. A substance made of two or more elements in a specific proportion.
  18. 31. A tree that can grow in fresh and salt water.
  19. 34. When all of the individuals of a species no longer exist.
  20. 35. Organisms that can capture energy from nonliving sources and convert it into forms living cells can use.
  21. 37. Particles without a charge.
  22. 39. The study of water.
  23. 41. Small structures made up of at least two atoms of any kind.
  24. 42. The zone in the ocean that light can penetrate.
  25. 45. Positively charged particles in the nucleus.
  26. 47. Any compound that releases H+ ions into solution.