Final answer:
A carbon footprint is the total amount of greenhouse gases emitted by a product or service, from production to disposal. The correct definition is the amount of carbon released during all stages of a product's life cycle. People can use online tools like the carbon footprint calculator to measure and reduce their impact.
Step-by-step explanation:
The definition of a carbon footprint is the total amount of carbon dioxide (CO2) and other greenhouse gases emitted over the full life cycle of a product or service. This encompasses the production, distribution, consumption, and disposal of the product. Therefore, the correct answer is 1) The amount of carbon released during the production, distribution, consumption, and disposal of a product.
Understanding one's carbon footprint is vital to addressing climate change, as it quantifies the impact of individual and collective actions on the environment. To measure this footprint, one can use various online calculators, including the carbon footprint calculator. Implementing strategies to reduce emissions can make a significant difference, such as conserving energy, reducing consumption, and choosing sustainable products.