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

What potential environmental issue is associated with silver in food packaging?

1. It can enhance soil quality

2. It can leak into landfill or water pipes

3. It can improve crop health

4. It can cause air pollution

The correct answer is: It can leak into landfill or water pipes

The potential environmental issue associated with silver in food packaging stems from its ability to leach into the environment. When food packaging that contains silver is disposed of, either in landfill sites or through water systems, the silver can dissolve or fragment and contaminate soil and waterways. This leaching can have detrimental effects on ecosystems and may pose risks to aquatic life, as silver is known to be toxic to various organisms. The other options present outcomes that are either beneficial or unrelated to the issues surrounding silver in food packaging. For instance, the idea that it can enhance soil quality or improve crop health simplifies the complex interactions between materials and soil health, as silver does not contribute positively in this context. Similarly, while air pollution is a significant environmental concern, it is not a direct result of silver used in food packaging; thus, it does not relate to the specific issue at hand.