Have you heard about hypoxia? Try to gather information about it and discuss with your friends.

Explanation

Hypoxia is a deficiency of `O_2` at the tissue level. Based on the cause, four types of hypoxia can be recognised. Hypoxic hypoxia is caused by a low `P_(O_2)`, in arterial blood and may be the result of high altitude, obstruction in airways or fluid in the lungs. In anaemic hypoxia, there is too little functioning haemoglobin in the blood. Hemorrhage, anaemia or failure of haemoglobin to carry `O_2` are its main causes. In ischemic hypoxia, blood flow to a tissue is so low that adequate `O_2` is not delivered to it even through `P_(O_2)`, and oxyhaemoglobin are normal. However, in histotoxic hypoxia, the blood delivers adequate `O_2` to tissues, but the tissues are unable to use it properly because of the action of a toxic agent.