oxygen, n.All

One tree is able to produce enough oxygen to support a family of four

The brain uses 25% of all the oxygen your breathe

Oxygen is a drug with the worst withdrawal symptoms of all.

Oxygen is produced on our planet, to the tune of 50% by the

Lobsters have curious blood. It is normally transparent, but then turns blue when exposed to oxygen.

Oxygen is overrated.

Algae is responsible for nearly 50% of the world's oxygen (ocean algae).

Oxygen is a toxic gas; anyone who inhales it will normally dies within 80 years.

The Amazon rainforest is responsible for half the world's oxygen supply

Dragonflies had a wingspan of almost two feet during the Paleozoic era (probably because of increased oxygen n the atmosphere)