Đề thi VSTEP Full B2 — Community Gardens & Microplastics (Round 5)

In many cities around the world, vacant lots and rooftops are being transformed into community gardens. These green spaces, often managed by local residents, are changing how people in urban areas connect with nature and with each other. The benefits go well beyond fresh produce. Research shows that people who regularly spend time in these shared spaces report lower stress levels and improved mood. Dr. Elena Martinez, a public health researcher, explains that physical activity combined with social interaction creates a powerful form of therapy, particularly valuable in dense urban environments where loneliness is increasingly common. Beyond personal well-being, community gardens foster social cohesion. Neighbours who previously had little contact now work side by side, sharing tools, seeds, and advice. In some neighbourhoods, garden members have organised after-school programmes, cooking workshops, and small farmers' markets that strengthen the local economy. City planners are now recognising these advantages. Several municipalities offer grants and technical support to groups wanting to start gardens, viewing them as essential components of healthier, more resilient cities.

Welcome to 'Planet Perspectives.' I'm James Chen, and today we're discussing microplastics in freshwater systems, an environmental issue gaining attention worldwide. Microplastics are tiny plastic particles, less than five millimetres in size, that come from the breakdown of larger plastic waste or are manufactured at that size for products like cosmetics and cleaning agents. Once in the environment, they are extremely difficult to remove. Researchers from the University of Toronto recently found microplastics in over 80 percent of samples taken from lakes and rivers across North America. The particles appear not only in surface water but also in sediment at the bottom of lakes, suggesting they accumulate over time. The concern is their impact on ecosystems. Small organisms often mistake microplastics for food, leading to internal injuries and exposure to toxic chemicals attached to the plastic. These effects move up the food chain, eventually reaching the fish humans consume. While there is no simple solution, experts recommend practical steps. Reducing single-use plastics, improving wastewater treatment, and supporting policies that hold manufacturers accountable are the most effective actions individuals and governments can take.