Fossil fuels are non-renewable energy sources formed from the remains of ancient plants and animals.

The photovoltaic effect is the process by which certain materials generate an electrical current when exposed to light.

China is the world's largest producer of hydroelectric power, accounting for over 28% of global production.

LEDs are the most energy-efficient type of lighting, consuming up to 85% less energy than incandescent bulbs.

Nitrogen is not a greenhouse gas, as it does not absorb infrared radiation.

Energy conservation is the practice of reducing energy consumption through efficient use of energy resources.

North America has the highest per capita energy consumption, with an average of 13,000 kWh per person per year.

The increasing demand for energy is driven by a combination of population growth, economic development, and technological advancements.

Energy conservation aims to reduce energy consumption, not increase it.

The geographical distribution of energy resources is influenced by a combination of climate, geology, and topography.

China has the largest installed capacity of solar PV systems, with over 300 gigawatts (GW) of installed capacity.

The development of renewable energy sources faces challenges such as high cost, intermittency, and lack of infrastructure.

Energy rationing is not a policy instrument used to promote energy conservation, as it involves restricting energy consumption rather than encouraging efficient use.

Energy justice encompasses equal access to energy resources, fair distribution of energy benefits, and minimizing the negative impacts of energy production and use.

Burning fossil fuels is not a sustainable energy practice, as it contributes to greenhouse gas emissions and air pollution.