Choose the best answers to complete the following sentences.

Câu hỏi

Carbon dioxide is released through ____ processes such as respiration and volcano eruptions and through ____ activities such as deforestation, land use change, and burning fossil fuels.

Đáp án
D. natural-human

Câu hỏi thuộc Bài tập:

E11- GS- Unit 5- Practice 2