The great american biotic interchange establish the fauna that exist in both north and south america today. which of the following occurred during this event?
a. the first humans dispersed from north to south america
b. many species that moved from north to south amenica were very successful and stif exist today
c .only small mammals moved from south america to north america
d. many species that moved into north amenca from south america outcompeted the endemic taxa and still exist today
e. all of the above occurred during the great american biotic interchange

The correct answer is option d. "Many species that moved into North America from South America outcompeted the endemic taxa and still exist today".

Explanation:

The Great American Biotic Interchange (GABI) was an historical period at which numerous species from South America migrated to North America, and numerous species from North America migrated to South America because of the formation of the Isthmus of Panama. During this event, many species that moved into North America from South America outcompeted the endemic taxa and still exist today. The species that successfully immigrated to South America and exist today were mostly small mammals, such as armadillos and opossums.

[content deleted] - user123802726recklesschicken

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.