An occluded front forms when a warm air mass is caught between two cooler air masses.
The volume of 10 grams of frozen water is more than the volume of 10 grams of liquid water
A way to explain it is that back then all the continents were together but soon after drifted apart the were in the same place sort of put they drifted apart so that's sorta what happened. Hope that helps a little
3 of them left and i just need points lol sorrrry