Editing Land bridge (section)

{{Short description|Connection between two land form bodies}}
{{Other uses}}
[[Image:Pm-map.png|thumb|upright=2|The [[Isthmus of Panama]] is a land bridge whose appearance 3 million years ago enabled the [[Great American Biotic Interchange]], in which animals and plants from the north colonized the south, and vice versa.<ref name="Webb 2006">{{cite journal  |last=Webb |first=S. David |title=The Great American Biotic Interchange: Patterns and Processes |journal=[[Annals of the Missouri Botanical Garden]] |volume=93 |issue=2 |pages=245–257 |date=23 August 2006 |doi=10.3417/0026-6493(2006)93[245:TGABIP]2.0.CO;2 |s2cid=198152030 }}</ref>]]

In [[biogeography]], a '''land bridge''' is an [[isthmus]] or wider land connection between otherwise separate areas, over which [[animals]] and [[plant]]s are able to cross and [[Colonisation (biology)|colonize]] new lands. A land bridge can be created by [[marine regression]], in which [[sea level]]s fall, exposing shallow, previously submerged sections of [[continental shelf]]; or when new land is created by [[plate tectonics]]; or occasionally when the sea floor rises due to [[post-glacial rebound]] after an [[ice age]].