Greenhouse Effect:The greenhouse effect is the process by which certain gases (including CO2) trap heat in Earth's atmosphere, leading to global warming.
Carbon Footprint:A carbon footprint is a measure of the total amount of greenhouse gases (including CO2) emitted directly or indirectly by an individual, organization, or product.
Carbon Sink: A carbon sink is a natural or artificial reservoir that absorbs and stores more carbon than it releases. Examples include forests and oceans.