Number of combinations created in this step: 21

42. Mutating Bacteria = Alcohol + Bacteria
43. Cells = Bacteria + Bacteria
44. Stromatolites = Bacteria + Stone
45. Algae = Bacteria + Water
46. Brick = Clay + Fire
47. Bronze = Copper + Lead
48. Brass = Copper + Zinc
49. CuZn Battery = Copper + Zinc
50. Viruses = Earth + Bacteria
51. Cinnabar = Earth + Minerals
52. Sulfur = Earth + Minerals
53. Hydrogen = Electricity + Water
54. Oxygen = Electricity + Water
55. Lightbulb = Glass + Tungsten
56. Nitric Acid = HNO3 + Water
57. Steel = Iron + Chromium
58. Graphite = Minerals + Volcano
59. Mineral Water = Minerals + Water
60. Snow = Rain + Cold
61. Thunderstorm = Rain + Lightning
62. Sandglass = Sand + Glass
63. Ice = Water + Cold
64. Chlorine = Fire + Salt + Electricity
65. Sodium = Fire + Salt + Electricity
66. Compass = Glass + Magnet + Metals