NEET BIOLOGY

ECOLOGY

ENVIRONMENTAL ISSUES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the main contributor to air pollution in the UK today?
A
automobile emissions
B
nuclear energy
C
human health hazards
D
coal burning fires
Explanation: 

Detailed explanation-1: -Nitrogen oxide emissions in the UK come from: 35% from road transport. 22% from energy generation. 19% from industrial combustion.

Detailed explanation-2: -The biggest contributors to this were cars and taxis, which made up 52% of the emissions from domestic transport (51 MtCO2e ), Heavy Goods Vehicles (HGVs) (19% of domestic transport emissions, 18.6 MtCO2e ) and vans (16% of emissions, 16 MtCO2e ). Total domestic emissions fell by 42.4 MtCO2e in 2020.

Detailed explanation-3: -Emissions come principally from three automotive sources: the exhaust, the fuel system (evaporative), and crankcase ventilation gases.

Detailed explanation-4: -Petrol and diesel-engined motor vehicles emit a wide variety of pollutants, principally carbon monoxide (CO), oxides of nitrogen (NOx), volatile organic compounds (VOCs) and particulate matter (PM10), which have an increasing impact on urban air quality.

Detailed explanation-5: -Burning gasoline and diesel fuel creates harmful byproducts like nitrogen dioxide, carbon monoxide, hydrocarbons, benzene, and formaldehyde. In addition, vehicles emit carbon dioxide, the most common human-caused greenhouse gas.

There is 1 question to complete.