Cuales mutaciones son beneficiosas o dañinas​

What groups of species are alive, eukaryotes, symmetrical, have backbones, and are tetrapods? (didn't mean to put spanish)

Me llamo paula y (1) en la unam. yo (2) en mi tercer año. mi amiga marina y yo ( jóvenes atractivas y simpáticas. mi familia piensa que nosotras (4) un poco inseguras, pero eso no ( verdad. por lo general, marina (6) extrovertida y (yo) (7) una persona muy alegre, pero nosotras (8) hartas de no tener pareja. si (tú) (9) simpático, cariñoso y maduro, y no (10) viviendo en otra ciudad escríbenos una carta. ¡nos encantaría conocerte!

I'm antonio. i'm 15 years old. in my country there is a law that reminds me that < < there is a law that reminds me that > > i have to sweep and clean the house every week. i have to study every day. my friend laura is 12 years old; she has to wash dishes after dinner on tuesdays and thursdays, and she has to scrub the floor every < < each > > week. she goes to school with me < < with me > > . based on what you learned from the lesson , which country are antonio and laura describing? argentina brazil spain uses