Luis Alvarez was a Nobel Prize winning physicist, probably most famous for the discovery of the iridium layer and his theory that the mass extinction of dinosaurs was caused by an asteroid or comet colliding with Earth
Luis Walter Alvarez was a noble prize winning physicist, who is probably most famous for the discovery of the iridium layer and his theory that the mass extinction of dinosaurs was caused by an asteroid or comet colliding with earth.
Pepita Sandra Pues, tú es que ella tiene parientes en Argentina, ¿no? Ay, sí es verdad. Yo se que tiene familia en Argentina porque yo conosco a su tía Lola. Y es que ella es de Argentina.
