Energy plays a crucial role in modern societies. It has a vital input to all sectors (e.g. residential, transportation, and manufacture) and is essential to generate electricity. In other words, all societies require energy services to meet basic human needs such as lighting, heating, and mobility.

Ongoing concerns about climate change have made renewable energy sources an important component of the world energy consumption portfolio. Renewable energy technologies could reduce CO2 emissions by replacing fossil fuels in the power generation industry and the transportation sector.

Answer: Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply.

What is the importance of the non-conventional source of energy? Non-conventional sources of energy are considered to be important as they are renewable, pollution-free, availability of them is in abundance, and they are environmentally friendly.

I conclude that energy appearing in various forms like for example, mechanical energy, is conserved. It can be transformed from one form to another. It is known as the law of conservation of energy. It is a proof that the total work done to raise an object is equivalent to gravitational potential energy restored.

Energy, as we have noted, is conserved, making it one of the most important physical quantities in nature. The law of conservation of energy can be stated as follows: Total energy is constant in any process. It may change in form or be transferred from one system to another, but the total remains the same.

Energy generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known a non-conventional energy. All these sources are renewable process of energy generation and do not cause environmental pollution.

Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.

Non-renewable energy comes from sources that will run out or will not be replenished for thousands or even millions of years. Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas. Carbon is the main element in fossil fuels.

(i)Non-conventional sources of energy are inexhaustible. They do not pollute the environment. (ii)Nuclear power is emits large amounts of energy. (iii)Non-conventional sources of energy are low cost and easy to operate.

Nonconventional energy sources (also called alternative energy sources) are any sources or substances that can be used to produce fuels, other than conventional fuels. These are sources that are continuously replenished by natural processes, including biomass, hydropower, nuclear power, solar energy, and tidal energy.

In conclusion, kinetic energy is energy that is moving and potential energy is energy that is being built up. There are two main types of potential energy which are gravitational and elastic.

Leaders will use these five sources of power to lead their people and influence them. The five sources of power are legitimate power, coercive power, reward power, expert power and referent power.

Solar Energy. The sun is our most powerful source of energy. Sunlight, or solar energy, can be used for heating, lighting and cooling homes and other buildings, generating electricity, water heating, and a variety of industrial processes.

Some ways to save electricity can include using natural light, changing your bulbs to LED, unplugging appliances, and turning off the lights when you are away from home. Anyone who attempts made to save electricity can reduce the carbon dioxide emission.

The conventional or traditional sources of energy are those which are old forms and their uses were known to man for long, such as coal, petroleum, electricity, natural gas as well as nuclear power. While non-conventional energy sources are solar energy, wind energy, geothermal energy, tidal energy, etc.