What instrument is affected by air pressure changes?

The Tropic of Capricorn runs through which African nation where 25 percent of the Gross National Product comes from the mining of precious ores and stones such as diamonds copper and gold? What occurs when matter transitions between solids liquids and gas? What are the similarities and differences between G1 and S stages of interphase? What was the category of hurricane Donna when it hit long island? What is the coefficient of kinetic friction between vinyl and nylon- I have searched at least 30 Engineering handbooks with no luck? Is TRUE of an analytical paper? How is the cell cycle important to some unicellular organisms? What is the mass of a 500.00 mL sample of seawater with a density of 1.025 g/mL? Could aliens live on Venus? What do this quote change will not come if we wait for some other person or some other time we are the ones we've been waiting for we are the change that we seek mean? What does connective device mean? Is a virus a cell why or why not? How do you identify these organ systems? If a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell what can be said about the movement of water? When 50 gram of sugar is dissolved in 100 ml of water there is no increase in volume what characteristics of matter illustrated by this observation? What is standard cell notion of a galvanic cell made with zinc and aluminum? What is a ribosomes? What is time difference between evening and afternoon? What will happen if you touch Pluto? What would happen if you opened the lid that contains helium gas?