The total amount of water as a percentage of all the mass that makes up our planet is estimated at 0.023%. A little over 2/3 of the Earth is covered by water; to be more precise, the consensus is 70.8% (71%) of the surface is water, 29.2 % is land. The total amount of water as a percentage of all the mass that makes up our planet is estimated at 0.023%. <br /><br /> A little over 2/3 of the Earth is covered by water; to be more precise, the consensus is 70.8% (71%) of the surface is water, 29.2 % is land. <br /><br /><br /><br /><br /><br /><b> </b>.
Dictionary entry overview: What does hyperventilation mean? â¢ HYPERVENTILATION (noun) The noun HYPERVENTILATION has 1 sense: 1. an increased depth and rate of breathing greater than demanded by the body needs; can cause dizziness and tingling of the fingers and toes and chest pain if continued Familiarity information: HYPERVENTILATION used as a noun is very rare.
It is also called overbreathing, and it may leave you feeling breathless. You breathe in oxygen and breathe out carbon dioxide. Excessive breathing creates low levels of carbon dioxide in your blood. This causes many of the symptoms of hyperventilation. Feeling very anxious or having a panic attack are the usual reasons that you may hyperventilate. But rapid breathing can be a symptom of a disease, such as: