🔍 Key Concepts

• Combustion of fuel oil in marine diesel engines • Which fuel components form harmful exhaust gases when burned • How certain fuel impurities relate to acid rain and emissions regulations

💭 Think About

• Think about which element, when burned, is most closely linked with regulated air pollutants from ship exhaust. • Ask yourself: which of these elements is commonly limited or specified in fuel standards due to environmental concerns? • Consider which element produces oxides that can lead to acid rain and respiratory problems when released into the atmosphere.

✅ Before You Answer

• Verify which fuel component is specifically targeted in emissions control areas (ECAs) and MARPOL Annex VI limits. • Check which element forms oxide compounds in the exhaust that are known major air pollutants. • Confirm which component is often listed as a maximum allowable percentage in marine bunker fuel specifications due to pollution.