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.
A unilateral contract is an agreement which is one-sided; in other words, one person makes a promise to do something while the other does not take action immediately. Rather, the other party will act in the future.Examples of unilateral contracts include contests.nce you complete this lesson, you will have an understanding of what is a unilateral contract. You will examine the definition of a unilateral contract, as well as review an example.