Answer:
El neumologo es el doctor y especialista en los pulmones, so, el te da tratamiento en eso, la calidad de vida eso depende de como vivas, de tu trabajo y de quien te rodea.
Explanation:
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:
