Which chemical reduces oxygen in the blood, causing a difference between the amount of oxygen the cells need and the amount of oxygen the blood can supply?

In 2001, records showed that local stocks of fish were down worldwide. yet, records of harvests indicated that fish were being taken at records rates. what was actually happening?

What terms describes being out of water after being submerged

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.