The greater the concentration of sulfur and nitrogen oxides, the higher the ph of precipitation.

true
false

Protons and neutrons are found within the nucleus of an atom

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk, in meters?

The midpoints? a, b, and c are marked on the histogram. match them to the indicated scores. which? scores, if? any, would be considered? unusual?