1. Which of the following decreases with an increase in altitude? a. air pressure
b. visibility
c. water vapor
d. none of the above

Which type of basaltic lava flow has a fairly smooth

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

Which statement best explains why the overall charge on an atom is zero?