A mercury barometer, with a tube of uniform diameter and length 840 mm above the mercury
level in the reservoir, reads 740 mm on a day when
the atmospheric pressure is 760 mm of mercury
Estimate the pressure of the atmosphere on a day
when it reads 720 mm. Assume the average
temperature is the same on both days.

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.