Question

The theory of a land bridge between South America and Africa as an explanation for similar fossils on the two continents is not supported today because.... . a.) there are no remnants of the bridge in the Atlantic Ocean. . b.) the two continents’ current coastlines do not fit together. . c.) there are no continuous mountain belts between the two continents. . d.) the two continents have dissimilar wildlife and vegetation. .

Answer 1

The theory of a land bridge between South America and Africa as an explanation for similar fossils on the two continents is not supported today because there are no remnants of the bridge in the Atlantic Ocean.

 

A land bridge, in biogeography, is an isthmus or wider land connection between otherwise separate areas, over which animals and plants are able to cross and colonize new lands. A land bridge can be created by marine regression, in which sea levels 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.

 

The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.