When you're talking about nonspecific things.
it's like (a) and (an) in english.
uno is for singular masculine.
una is for singular feminine.
unos is for plural masculine.
unas is for plural feminine.
Answer:
Chihuahuas are shaking because there cold or afraid they will hide under blankets to feel safe and comfort
Answer:
Make a thematic table where they present variants of Spanish among their speakers.
Answers:
What do we know about the linguistic and cultural diversity of Spanish speakers?
How did Spanish spread in America since colonization processes believe that these spaces correspond?
Marcos y yo nos servimos pollo. Tù nos buscas.