Задайте два специальных вопроса к предложению: People and animals breathe in oxygen, and...

Question

Задайте два специальных вопроса к предложению:
People and animals breathe in oxygen, and breathe out carbon dioxide

Answer 1

1.who does breathe in oxygen, and breathe out carbon dioxide?
2. What do people and animals breathe in and breathe out?