Take our 100 x 100 pixel image again. Suppose it's set at 100 PPI (producing the same 1 x 1 printed image). With re-sampling off, when you adjust the PPI the dimensions adjust as well, this is how things worked in the example above. With re-sampling on, the dimensions won't change.
To dispose of charcoal and wood ash: Let the ash cool for 48 hours. You can speed up this process by pouring water over the hot charcoal and stirring it very carefully. When the ash has cooled completely, wrap it in aluminum foil and place it in an noncombustible outdoor trash bin.
Clean out your grill well before each use! A pile of charcoal ash in the bottom of your grill or on the charcoal grate will not allow adequate airflow to your charcoal, no matter what charcoal starter you use. Your coals will light easier and burn hotter with adequate air circulation. Use enough charcoal.