Crossword puzzle biology

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Across
  1. 3. A biological tool used to build or break down molecules quickly.
  2. 5. The body’s internal thermostat trying to keep everything "just right."
  3. 8. The non-living stuff, like rocks and sunlight, that affects life.
  4. 15. How plants turn a sunny day into a snack.
  5. 16. Liquid rock that is still hiding underground.
  6. 18. When wind or water acts like sandpaper on the Earth's surface.
  7. 20. An organism's specific "rung" on the food ladder.
  8. 22. Different "flavors" or versions of a single gene.
  9. 23. When water vapor gets cold and decides to clump back into a liquid.
  10. 25. Energy sources made from the leftovers of ancient organisms.
  11. 26. The giant, slow-motion bumper cars that make up the Earth's crust.
  12. 29. The tiny "protein factory" clicking away inside the cell.
  13. 30. The hidden "blueprints" in your DNA that you can’t see from the outside.
  14. 31. The process of one cell making an identical twin of itself.
  15. 32. The layer of the sky where all the weather and breathing happens.
  16. 33. Particles moving from a crowded "mosh pit" to an open dance floor.
  17. 34. The maximum number of "residents" an ecosystem can support.
  18. 35. The version of a trait that "shouts" over the quieter one.
  19. 37. The slow "relay race" of plants reclaiming a burnt-out forest.
  20. 39. Rock that has been baked and squished into something new.
  21. 40. An educated "maybe" that you can actually put to the test.
Down
  1. 1. The Earth’s "sunglasses" that block out harmful UV rays.
  2. 2. The type of boundary where plates are in a head-on collision.
  3. 4. A random "typo" in the genetic code that might change a trait.
  4. 6. An atom that has the standard number of protons but extra weight.
  5. 7. What you actually see in the mirror—physical traits in action.
  6. 9. A chemical "hype man" that speeds up a reaction without joining in.
  7. 10. Nature’s way of deciding who survives long enough to have kids.
  8. 11. A long-term "roommate" situation between two different species.
  9. 12. When water sneaks through a membrane to balance out the saltiness.
  10. 13. The shy trait that only shows up if its partner is also quiet.
  11. 14. The specialized cell division that makes reproductive cells.
  12. 17. The cellular "furnace" where sugar is burned to keep the lights on.
  13. 19. The day when the sun reaches its highest or lowest point in the sky.
  14. 21. Having a wide variety of "guests" in an ecosystem’s guest list.
  15. 24. An underground "sponge" made of rock that holds our drinking water.
  16. 27. When the atmosphere acts like a cozy blanket for the planet.
  17. 28. Anything in an ecosystem that is breathing, growing, or was once alive.
  18. 36. An organism's very specific "job description" in its habitat.
  19. 38. Rock that started out as a molten "soup."