The digestive function of the liver is to produce bile, which is a fat emulsifier. Bile is a yellow-green, alkaline solution containing bile salts, bile pigments (primarily bilirubin), cholesterol, neutral fats, phospholipids, and a variety of electrolytes.he digestive function of the liver is to produce bile, which is a fat emulsifier. Bile is a yellow-green, alkaline solution containing bile salts, bile pigments (primarily bilirubin), cholesterol, neutral fats, phospholipids, and a variety of electrolytes.
The use of fossil fuels (coal, oil and natural gas) is a problem because the burning of these fuels in industry, transport and the generation of electricity releases carbon dioxide (CO2).This is causing global warming and climate change.: The combustion (burning) of fossil fuels releases poisonous gases into the atmosphere. Oil/Petrol, for instance, is a Hydrocarbon (a mix of Carbon and Hydrogen atoms) and when burnt with Oxygen creates Carbon Monoxide and Carbon Dioxide.
The use of fossil fuels, such as petroleum, will have a negative impact on Earth's biosphere, damaging ecosystems through events such as oil spills and releasing a range of pollutants into the air including ground-level ozone and sulfur dioxide from sulfur impurities in fossil fuels.