Why does a good cook wait until just before serving to put salad dressing on lettuce?

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.