Too much greenhouse gas emissions, causing global warming and climate change. We need to change to renewable energy for everything.
The term clean source of energy refers to only primary energy sources as wind or solar energy. Electricity, by definition, is not a primary energy source. It is a secondary energy source that is could be produced by a clean energy source as wind or any renewable primary energy source or produced by fossil energy source as oil, natural gas, or coal.
The Sun isn't our primary source of energy. The world still relies on burning fossil fuels as a main source of energy. Solar power only provides one percent of the world's electricity production.
Fossils have become our primary energy source due to their abundance, high energy density, and relatively low cost of extraction. Over time, human civilization has developed technologies that rely on burning fossil fuels to generate heat and electricity, making them the most widespread energy source today.
Well when you burn fossil fuels you get alot of the energy that we use like petroluem, natural gas, and coal.
Hydrogen is not a renewable fuel. It is a secondary energy source (or an energy carrier) that could be produced using another primary energy source. Hydrogen could be produced using either renewable primary energy source (e.g. solar energy), nuclear energy, or by using fossil fuel (e.g. natural gas)
Fossil fuels are the main source of energy for many people because they are relatively inexpensive to extract and produce large amounts of energy when burned. They are also widely available and have a long history of use, making them a familiar and convenient choice for meeting energy needs. Additionally, existing infrastructure for extracting, transporting, and using fossil fuels makes them a preferred choice for many energy systems.
primary because a fossil is a thing you first see. if it was a book about fossils then its secondary.
Glucose is the external fuel of choice used by cells as a ready source of energy. Cells break down glucose through a series of metabolic pathways to produce ATP, the primary energy currency of the cell.
Oil
The United States relies mainly on fossil fuels as the primary energy source. According to the numbers given in the United States Department of Energy website, fossil fuels (coal, oil and natural gas) currently provide over 85% of the energy consumed in the United states.
fossil fuels can be used as an energy source to power all vehicles and most machinery
Carbohydrates are the body's primary and immediate source of energy.