Hello!
The name for continents in one landmass surrounded by gigantic ocean is Pangaea.
This name is originated from the Greek words Pan ("all") and Gaia ("Earth"). It describes the supercontinent that would have existed in the Cenozoic and Mesozoic periods by the joining of all continents that we know them today.
The gigantic ocean that surrounded it is called Panthalassa, from Greek Pan ("all") and thálassa ("sea").
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I hypothesis that with the assumption that nights being colder and a soccer ball in front of sunlight being hot that nights would be much air condense giving the look of deflation where as sunlight could even expand the air but normally not as noticable as the cold condensing ball.
And for an experiment you could fill a balloon or ball with room temp. air and freeze it over night and then the next day expose it to sunlight for a couple of hours and compare both results
D, because the hairdryer uses a fan
E, because it produces heat
D. the last choice because the info above tells u so