1.   However, there is no source of extra oxygen to expend as rocket propellant.

2.   Kelsey spent five weeks on a ventilator and still needed extra oxygen until last week.

3.   Let your arms swing with you and feel the energy coming from the extra oxygen you are breathing.

4.   Therefore, as a reasonable approximation, you can neglect the extra oxygen that plants consume at night.

5.   He was so nervous he began hyperventilating, and the extra oxygen made him dizzy.

6.   But the fuel with extra oxygen costs more, and consumers have complained.

7.   Dependent on extra oxygen to help her breathe, she packs a small tank on the horse as she rides solo around the ring.

8.   Doctors have wasted no time letting the air out of the recreational oxygen balloon, saying there is no proof that extra oxygen has any benefit.

9.   Engineers added extra oxygen to the cabin to compensate for leaking when the seal was replaced, and later this extra oxygen was vented into the cargo bay.

10.   Fearful that ordinary mouthwashes were drying out the palates of the stars, Saldamando brewed up a compound with a main ingredient that contains extra oxygen atoms.