because they produce oxygen and control the climate

because they produce oxygen and control the climate these plants will produce food and oxygen(改为被动语态). These plants will produce food and oxygen that we need. Trees take in harmful gases from the air ang produce oxygen 11.The oil they produce has much the same taste and contains Trees produce oxygen,为什么不是Trees provide oxygen they produce sick in suzhou and hangzhou 改为被动语态 英语翻译The oxygen-binding activity of myoglobin and hemoglobin The climate in Beijing and Shanghai is the same.The climate The scientists are discussing the global climate change and They won the game because they worked hard and had the b____ The famers keep sheep for __(produce)milk and mutton.