4.11

• combustion of fossil fuels (as well as vehicle combustion) gives off sulphur dioxide (SO2)
• When the SO2 combines with H2O in the atmosphere, sulphuric acid is made which leads to acid rain.
• Trees and plants are affected by the acid rain by getting burned
• Ca2+ and mag 2+ are leached from the soil, meaning plants cannot obtain calcium or magnesium that they need to grow
• the ph of lakes is reduced which releases Al3+ ions, which means more fish die. The aluminum forms as a mucus to the fishes gills which decreases the ability for oxygen to get in


• Fossil fuels are burned with an insufficient amount of oxygen resulting in carbon monoxide
• Carbon monoxide is toxic as it attaches to your haemoglobin cells inside your red blood cells which blocks oxygen getting around your body
• does not smell, cannot be seen, can lead to death