Fossil fuels, such as coal, oil, and natural gas, are non-renewable energy sources because they are formed from the remains of ancient plants and animals and take millions of years to replenish.

Carbon dioxide (CO2) is the primary greenhouse gas emitted by human activities, primarily through the burning of fossil fuels for electricity, heat, and transportation.

Incandescent bulbs are not energy-efficient because they waste most of the energy they consume as heat, while CFLs and LEDs are more efficient and produce more light with less energy.

Energy conservation refers to the reduction of energy consumption through behavioral changes, such as turning off lights when leaving a room, and the use of energy-efficient technologies.

Energy conservation does not lead to the depletion of natural resources, but rather helps to preserve them by reducing the demand for energy derived from non-renewable sources.

Solar photovoltaic (PV) systems convert sunlight directly into electricity using semiconductor cells, while solar thermal systems use the sun's heat to generate electricity.

Vehicle energy audits are not typically conducted as part of energy conservation efforts, as they focus on improving the fuel efficiency of vehicles rather than reducing overall energy consumption.

Green building refers to the practice of designing and constructing buildings that are energy-efficient and environmentally friendly.

Carbon offsets are not renewable energy certificates, but rather a way to compensate for greenhouse gas emissions by investing in projects that reduce emissions elsewhere.

Transportation demand management refers to strategies and policies aimed at reducing the demand for travel, such as promoting public transportation, walking, and biking.

Energy efficiency leads to reduced greenhouse gas emissions by reducing the demand for energy from non-renewable sources.

Industrial energy efficiency refers to the practices and technologies used to reduce energy consumption in industrial processes.

Fossil fuels are not energy storage technologies, but rather sources of energy.

Agricultural energy efficiency refers to the practices and technologies used to reduce energy consumption in agricultural operations.

Conventional appliances are not energy-efficient appliances, as they consume more energy than energy-efficient models.