<p>The reason you find this odd is because you don’t comprehend that race is a biological term, whereas ethnicity is not, it is a complex social and cultural concept. That is why Hispanic ethnicity can be ‘adopted’, either by a child being adopted into a Hispanic family or by someone immigrating to a Hispanic country. Race is not something that can be adopted because it is biological and determined at birth. </p>
<p>I found this helpful, perhaps it will help you to understand the difference in these terms:</p>
<p>Just as biological children of Jewish parents could be adopted by Christians and brought up to be Christians, a child of any race can be brought up by Hispanic parents to be ethnically Hispanic. </p>
<p>Race on the other hand is biologically transmitted by the child’s biological parents. Adopting a child does not change it’s race.</p>