A cold front is the transition zone where a cold air mass is replacing a warmer one, (They move more slowly than warm front's.) Others are Characteristics of cold front's and they move faster than warm.
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The correct answer is - the Atlantic Ocean.
If South and Southeast Asia are excluded, then the moistest places on the Earth are influenced by the Atlantic Ocean. This places are the Amazon basin, the Caribbean islands, southern half of Central America, the east coast of North America, Western Africa, Ireland, and the British Islands. All of this places are very moist and it is a direct result of the Atlantic Ocean which has warm and moist currents that deliver the moisture in all of this places.
Tectonic activity that thrust mountains up from the ocean. floor because volcanoes come from the center of the earth and when the tectonic plates move it causes some of the lava from the inside of the earth to emerge and come to the surface where the ocean is and forms into an island (s).