From which region did the first inhabitants of southeast asia probably migrate? a. arabiab. southern china and south asiac. india and australiad. europe(gradpoint)

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The lines marked by the letters a, b, and c on the map above represent a. chains of volcanoes b. earthquake fault lines c. thin strips of heavy forests d. major rivers that flow from north to south

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction