Atelectasis is composed of 78% nitrogen and 21% oxygen. Since oxygen is exchanged at the alveoli-capillary membrane, nitrogen is a major component for the alveoli's state of inflation. If a large volume of nitrogen in the lungs is replaced with oxygen, the oxygen may subsequently be absorbed into the blood, reducing the volume of the alveoli, resulting in a form of alveolar collapse known as absorption atelectasis. It is usually associated with accumulation of blood, fluid, or air within the pleural cavity, which mechanically collapses the lung. This is a frequent occurrence with pleural effusion, caused by congestive heart failure (CHF).
Destroy All Humans! 2 worm to crawl around, eating nearby humans. The Anti-Gravity Field, which creates a small point of high gravity, which pulls anything, including humans, into it before exploding, destroying anything. "Destroy All Humans! 2" received generally positive reviews from critics. Aggregating review websites GameRankings and Metacritic gave the Xbox version 76.61% and 74/100 and the PlayStation 2 version 75.75% and 74/100. GameZone stated that "The new weapons and body snatching ability just add more fun to a game with huge open worlds and the plentiful side missions" and that the ""game actually supersedes the original"". The AI was criticized by TeamXbox,