Each of those groups is called a class. Each of those classes is of a certain width and this is referred to as the Class Interval or Class Size. This class interval is very important when it comes to drawing Histograms and Frequency diagrams.
Burns can come from anything hot. Microwaves, the sun, (sometimes the refrigerator,) a TV, computer, or handheld game that was turned on for a long time, active volcanoes, la â¦ va, fire, friction, steam, hot water, etc., can cause burns. Or cold. Burns are caused by rapid changes in temperature
Sunburn is an example of a first-degree burn. Second-degree burns cause blisters and have more pronounced swelling. The skin may slough (peel). Third-degree burns cause white or black charred skin and loss of pain sensitivity (insensate) because of nerve damage in the deeper tissues.