Number of combinations created in this step: 35

252. Seagulls = Air + Waterbirds
253. Carbon Dioxide = Ash + Nitric Acid
254. Potassium Nitrate = Ash + Nitric Acid
255. Panda = Bear + Bamboo
256. Wax = Beehive + Tools
257. Down = Birds + Tools
258. Hovercraft = Boat + Air
259. Submarine = Boat + Oxygen Container
260. Draw Well = Borehole + Water
261. Needle = Cactus + Tools
262. Silk = Cocoon + Tools
263. Cotton Wool = Cotton + Tools
264. Fiber = Cotton + Tools
265. Banana = Fruits + Grass
266. Juice = Fruits + Stone
267. Chickens = Grains + Birds
268. Granary = Grains + Incomplete Building
269. Black Lead = Graphite + Tools
270. Polar Bear = Ice + Bear
271. Penguins = Ice + Waterbirds
272. Nuclear Boiler = Incomplete Boiler + Uranium
273. Museum = Incomplete Building + Exhibit
274. Scuba = Oxygen Container + Water
275. Anvil = Steel + Tools
276. House = Stove + Incomplete Building
277. Sugar Water = Sugar + Water
278. Carbon = Sulfuric Acid + Sugar
279. Bones = Tools + Animal Fossil
280. Canines = Tools + Animal Fossil
281. Tube = Tools + Bamboo
282. Caoutchouc = Tools + Hevea
283. Indigo = Tools + Indigofera
284. Ducks = Water + Waterbirds
285. Atom Bomb = Active Robot + Metals + Plutonium
286. Incomplete Factory = Electric Boiler + Brick + Stone
287. Flour = Grains + Stone + Stone
288. Orangery = Incomplete Building + Glass + Flowers
289. Incomplete Mechanism = Wood + Tools + Metals