OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

In the context of sustainability, what is the importance of using renewable energy?

1. It accelerates the depletion of resources

2. It helps reduce the carbon footprint

3. It relies heavily on non-renewable resources

4. It prevents recycling initiatives

The correct answer is: It helps reduce the carbon footprint

Using renewable energy is important for sustainability primarily because it helps reduce the carbon footprint. Renewable energy sources, such as solar, wind, hydro, and geothermal, generate power without releasing significant amounts of greenhouse gases, unlike fossil fuels. This reduction in carbon emissions is crucial in combating climate change and its associated impacts, such as extreme weather events, rising sea levels, and biodiversity loss. By transitioning to renewable energy, societies can decrease their reliance on non-renewable resources, promote cleaner air, and contribute to a healthier ecosystem. In contrast, the other options highlight negative consequences or misunderstandings about renewable energy. They do not align with the benefits and principles of sustainability that renewable energy aims to address.