Acid mine drainage forms when water reacts with ___ in discarded mining materials?
Nitrogen
Mercury
Sulfur

Acompany produces items in small batches. the machinery needs to warm up before the items can be produced. the scatterplot shows the time needed to produce batches of different numbers of items. based on the line of best fit, which of these statements is true?

Which of the following east asian contries are a peninsula? a. china b. taiwan c. south korea d. mongolia

What are the 28 countries in the eu?