Definition [edit]. Hypoxemia refers to low oxygen in the blood, and the more general term hypoxia is an abnormally low oxygen content in any tissue or organ, or the body as a whole.Hypoxemia can cause hypoxia (hypoxemic hypoxia), but hypoxia can also occur via other mechanisms, such as anemia.ypoxemia (or hypoxaemia in British English) is an abnormally low level of oxygen in the blood.
At first glance, the most obvious difference between bilateral and unilateral contracts is the number of people or parties promising an action. Bilateral contracts need at least two, while unilateral contracts only obligate action on one part. The other differences might be a bit more subtle.
4.-1. A parol contract is defined to be a bargain or voluntary agreement made, either orally or in writing not under, seal, upon a good consideration, between two or more persons capable of contracting, to, do a lawful act, or to omit to do something, the performance whereof is not enjoined by law.1 Com.Contr. 2 Chit. unilateral contract is one in which there is a promise to pay or give other consideration in return for actual performance. (I will pay you $500 to fix my car by Thursday; the performance is fixing the car by that date). A bilateral contract is one in which a promise is exchanged for a promise.