What is the main source of carbon dioxide emissions? A. Transportation B. Industry C. Agriculture D. Households 相关知识点: 试题来源: 解析 B。工业是二氧化碳排放的主要来源。选项 A 交通运输也是排放源之一但不是主要的。选项 C 农业有一定排放但不是主要来源。选项 D 家庭排放相对较少。
carbon dioxide is the main content of greenhouse gas.and too much carbon dioxide discharged into atmosphere will cause the temperature raise.in order to restrain the uptrend of temperature,a conception was come up with in Copenhagen climate change conference that we must control the amount of ...
For plants to carry out photosynthesis, they need to absorb carbon dioxide. What is the role of carbon dioxide in photosynthesis? A. It provides energy B. It is a product C. It is a raw material D. It has no role 相关知识点: ...
根据第二段中"Orca can pull carbon dioxide out of the air and send it deep into the ground,where it is turned into stone.(Orca可以从空气中吸收二氧化碳,并将其送入地下深处,在那里它会变成石头)"可推知,设计Orca的目的是去除空气中的二氧化碳。故选D项。(2)D.代词指代题。根据第三段中"Orca can...
The increase in carbon dioxide emissions is a major environmental issue. What is the main cause of the increase in carbon dioxide emissions? A. Deforestation B. Industrial production C. Population growth D. Natural disasters 相关知识点:
Plants absorb carbon dioxide. What is the significance of this for the ecosystem? A. reduce pollution B. increase oxygen C. help animals breathe D. balance the E. cosystem 相关知识点: 试题来源: 解析 D。植物吸收二氧化碳,对生态系统的意义是平衡生态系统。选项 A“reduce pollution”是减少污染;...
A. Carbon dioxide is firstly found in human history B. Carbon dioxide is an important factor in global warming. C. Carbon dioxide is found reaching a quite high level. D. Measurement of carbon dioxide is symbolic in human history.
百度试题 结果1 题目39 What is the oxidation number of carbon in carbon dioxide ?A BB a+2 相关知识点: 试题来源: 解析 A 反馈 收藏
A. To make sugar. B. To carbonate soft drinks and make dry ice. C. To make coffee. D. To make bread. 相关知识点: 试题来源: 解析 B。中文解析:文中提到“Carbon dioxide is also used in the food and beverage industry. For example, it is used to carbonate soft drinks and to make ...
Carbon Dioxide Transport Carbon dioxide is transported in the blood in 3 different ways, listed below: 70% is transported as a bicarbonate ion 20% is bound to hemoglobin 10% is freely dissolved in the blood Because carbon dioxide is a non-polar molecule, it cannot...