Whether oxygen truly played such a critical role is hotly debated though, with other factors potentially igniting Earth's ...

They ran right in the front door as flames showed everywhere there and oxygen canisters continued to burst. The chief said his crews pulled back out of the front door and brought water around to ...

Anaerobic close anaerobicWithout oxygen. respiration does not need oxygen (unlike aerobic respiration). It is the release of a relatively small amount of energy in cells by the breakdown of food ...