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:
Answer:
os sustantivos y adjetivos terminados en vocal átona o en “-e” tónica forman el plural con “-s”: mesa/mesas, estudiante/estudiantes, taxi/taxis, claro/claros, tribu/ tribus, consomé/consomés.
Explanation:
C. Aceituna is the android I believe
Can you specify what you mean?
