Instructions There are many instructors (and even some studies) which demonstrate the sequence of turbulent diffusion flames leading to a backdraft using small scale models made from cardboard or plywood. Even full-scale models have been used in teaching backdrafts and fire behavior. In each of the training events (or studies), the door or plywood windows are open when the fire is lit. Once the flames become turbulent, then the door or window is closed, unlike on a fire scene. After watching the smoke conditions, the instructor opens the door or window, allowing oxygen-rich air to rush in, creating a backdraft. Some believe this type of training can lead to a false understanding of a backdraft. However, others support this form of training and espouse it is the same as what is seen on the fire ground. Based on what you believe, is it realistic

Ineed your asap, it due a crisis erupted in the 1830s over nullification. nullification is stating that something is null and void (not valid) and is not accepted. to nullify is to refuse to recognize. with the definition of nullification above, identify the cause of the political crisis in the 1830’s and the risk it created for the nation. question 3 options: the crisis was over the power of the presidency- the congress believed that the president should not be allowed to keep the power of the veto. the risk to the country was the presidency turning into a dictatorship. the crisis was a power struggle between the states rights and power of the federal government. the risk to the country was the possibility of states seceding from the union. the crisis was over whether taxing was constitutional. the risk to the country was that the people were being taxed unfairly the crisis involved states deciding to support other countries in their civil wars. the risk to the country was that states may begin fighting with each other over their alliances.