Answer: Yo compro un reloj a Pedro.
Answer: 1) ustedes
2) tú
3) usted
4) ustedes
5) usted
6) ustedes
7) ustedes
8) usted
9) tú
Explanation: I took Spanish. Good luck, hope this helps!
The answer would be:
A) Buenos días
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: