<span>a chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically.</span>
When someone makes reference to a familiar story or cultural reference, such as Ulysses and Achilles from Homer's "The Odyssey", it is considered an allusion.
<span>Being a teacher means having many benefits: personal job fulfillment, a strong union, supportive friends and colleagues, and many holidays and breaks off during the school year.</span>
Add only facts and occational opinions about initial change in whatever subject you need.
