Scientists think that algae first evolved approximately 2.7 billion years ago, and soon after this oxygen began to exist in the atmosphere. Photosynthesis by primitive plants and algae released oxygen, which gradually built up in the atmosphere.
Explanation:
I think the answer is unas
Because if you putter together is
Unas palabras because the word end in s and the other word end in s too so is unas
B. Nosotros vimos muchos peces.
Answer:
aye bro you might wanna put the picture in there :)
Explanation:
Cada uno de los dioses del Olimpo proporcionó a Pandora una cualidad diferente, haciendo que tuviese una gran belleza, persuasión, habilidad manual y gracia.
