Atmospheric pressure at 10,000 meters above sea level is about 30 kPa. What happens to the air pressure as you get closer to sea level? increases
decreases
stays the same

A,f, g are the points

The answer is a for sure

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.