The eruption of teeth into the mouth occurs between 6 months and 30 months of age. The first teeth to erupt are usually the lower front teeth. The eruption chart shows the average age at which teeth emerge. This can vary considerably from child to child. See part 9 of this subject.
When working with members of your community on fire and life safety, it is important to teach the common causes of electrical fires. Here are the 5 most common causes of electrical fires. 1. Faulty outlets, appliances. Most electrical fires are caused by faulty electrical outlets and old, outdated appliances. Other fires are started by faults in appliance cords, receptacles and switches.
  A backfire is when the ignition of fuel doesn't take place in the ignition/combustion chamber, it(a backfire) can take place in the intake or exhaust. It can be caused b â¦ y a fuel to air ratio not being correct, also if the timing of the spark is not just right that could cause it to back fire. A large backfire is most likely caused by a bad spark plug or plug wire. Unburned air and fuel pumped into the exhaust will often be ignited by the other cylinders still â¦ burning exhaust gases.