Air travel has a significant impact on carbon emissions due to the high altitude at which planes fly and the use of jet fuel.

Reducing meat consumption addresses multiple factors that contribute to carbon emissions, including land use, methane emissions, and energy consumption.

Natural gas is a fossil fuel and not a renewable energy source.

Carbon intensity refers to the amount of greenhouse gases emitted per unit of energy generated.

Public transportation addresses multiple factors that contribute to lower carbon emissions, including fuel efficiency, traffic congestion, and promoting non-motorized transportation.

Nitrogen is not a greenhouse gas, although it makes up the majority of Earth's atmosphere.

Carbon sequestration refers to the process of capturing and storing carbon dioxide from the atmosphere.

Energy-efficient lighting addresses multiple factors that contribute to lower carbon emissions, including reduced electricity consumption, longer lifespan, and reduced need for cooling.

Reducing carbon emissions generally leads to lower energy costs due to increased energy efficiency and the use of renewable energy sources.

Carbon footprint refers to the total amount of greenhouse gases produced by an individual or organization.

Composting food waste reduces carbon emissions by diverting it from landfills, where it would decompose and produce methane. Composting also creates a natural fertilizer that can be used in gardens.

Leaving windows and doors open for ventilation increases energy consumption and carbon emissions, as it requires more energy to heat or cool the home.

Life Cycle Assessment is a method used to evaluate the environmental impacts of a product or service throughout its entire lifecycle, from raw material extraction to disposal.

Reducing water consumption addresses multiple factors that contribute to lower carbon emissions, including energy consumption, desalination, and the use of renewable energy sources.

Driving a hybrid or electric vehicle does not necessarily reduce carbon emissions if the electricity used to power the vehicle is generated from fossil fuels.