Wax itself is the candle fuel. The heat from the candle melt and vaporized the wax to fuel gas and move up to combustion zone.Experiment to try: do it.
The secondary cancer is made of the same type of cells as the primary cancer. If your cancer started in your bowel and has spread to your lung, the areas of cancer in the lung are made up of bowel cancer cells. This is different from having a cancer that first started in the lung (a primary lung cancer). In that case, the cancer is made up of lung cells that have become cancerous.
There are many types of can-cer and all organs of the body can become cancerous. chronic respiratory diseases Diseases of the lung take many forms. Chronic obstructive respiratory disease and asthma are the most common forms. Chronic obstructive respiratory disease is caused by irreversible obstruction of the larger airways in the lung; asthma is caused by reversible obstruction of the smaller airways in the lung.