How does rain acid form

Acid rain forms when compounds like nitrogen oxudes and/or sulfur dioxide rise into our atmosphere and mix (and react) with water, oxygen, and other chamicals to produce acid rain.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.