Choose A, B, C, or D that best completes eac...
Câu hỏi: Choose A, B, C, or D that best completes each sentence. Carbon dioxide is released through _______ processes such as respiration and volcano eruptions and through__________activities such as deforestation, land use changes, and burning fossil fuels.
A. natural / human
B. Human / human
C. Man-made / ordinary
D. Ordinary / man-made
Câu hỏi trên thuộc đề trắc nghiệm
Kiểm Tra - Unit 6 !!