Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides—produced from power plants and automobiles—the rain becomes much more acidic. Typical acid rain has a pH value of 4.0.
It’s the first choice because the C at the end does not pair with anything, it was an extra pair that was made
they measure tremors and pressure. also, where are the options?
Without wolves of course, because wolves eat deer :D
