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:
Nose ok no mi hablas atpppppo
Son
Tercera persona del plural del presente.
Presente:
Yo soy
Tú eres
Él / Ella es
Nosotros somos
Vosotros sois
Ellos son
The oposite word of nunca is siempre
