Answer:
front develop the bundarey where two air masses with different temperature
I think it's pacific ocean, alantic ocean, indian occean, antartic ocean, and atic ocean hope this helps
Of the four types of Thematic maps, it is the CHLOROPLETH MAP which is ranked classes of some variable are represented using colored or shaded patterns and placing of symbols for those zones that are predefined. This is to show the average value of a certain property.