Heated molecules are loosened, moving apart to kind a gas. The gas molecules Merge with oxygen in the air resulting in burning. The fossil record of fire very first appears Along with the institution of the land-centered flora in the center Ordovician period, 470 million a long time ago.[12] These land https://fire-rated-ductworth-insu56788.vblogetin.com/42301966/the-2-minute-rule-for-car-park-extract-systems