GOT U! btw if my answer help u can u please mark it as brainlliest answer! Thanks! I know this bc I’m Spanish. 1. Fuimos 2. Comi 3. Compraron 4. Dimos 5. Puso 6. Vinieron or entraron (not sure) 7. Fueron 8. Gane 9. Contó 10. Quieren 11. Es (not sure) 12. Se 13. — 14. Recibió Hope this help
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.
