Because the rising air makes the flame rise by feeding it oxygen.

The pocket of ignited coal is fed oxygen by vent paths that have not yet been discovered.

This feeds nutrients and oxygen to the cardiac muscle, allowing it to continue beating for several hours after its removal from the animal.

'The flowers are splendid,' she said, lifting the thin plastic tube that fed extra oxygen to her nostrils.

He was panting, he realized, feeding oxygen to the adrenaline in his system.

"It fed oxygen to the fire, and by the time firemen arrived at 5:47 a.m., flames were coming out of the windows and doors."

The mission has been delayed one day because of additional testing this week on pumps that feed liquid oxygen to the three main rocket engines.

She had unwittingly fed oxygen to a stove fire.

Dale saw to the adjustments of the masks and tubes which fed oxygen through the nose, leaving the mouth free.

His oxygen mask was tight on his face, feeding him pure oxygen.