Question

different parts of earths surface have different evaporation rates. evaporation rates are highest in areas covered by oceans or tropical forests. air masses that form above source regions in these areas are humid, with relatively high water vapor content. in contrast, evaporation rates are lower in areas covered by desert or ice. air masses that form above source regions in these areas are dry, with relatively low water vapor content. the colors on the map below show surface conditions on earth during june 2004. four air mass source regions, labeled a, b, c, and d, are outlined. data source: reto stockli, nasa earth observatory based on the surface conditions of each source region, which of the following statements is correct? air masses that formed over region a were more humid than those that formed over region b. air masses that formed over region c were drier than those that formed over region d. air masses that formed over region d contained more water vapor than those that formed over region a.

Explanation:

Evaporation is high over oceans and tropical forests, creating humid air - masses, and low over deserts and ice, creating dry air - masses. Region A is over the ocean, Region B is over ice, Region C is over the ocean, and Region D is over the desert. Air - masses over oceans are more humid than those over ice or deserts.

Answer:

Air masses that formed over Region A were more humid than those that formed over Region B.