IELTS Reading Summary Completion

Rooftop farming has become more visible in several large cities, especially where unused roof space is common. Supporters argue that these projects can shorten food supply chains and make residents more aware of seasonal produce. A small farm on top of a supermarket or apartment building cannot feed an entire city, but it can supply herbs, salad leaves and some vegetables to nearby customers. The environmental benefits depend on design. Lightweight soil systems and careful irrigation can reduce the strain on older buildings, while rainwater collection may lower the demand for treated water. Some rooftop farms also improve insulation, keeping buildings cooler in summer and slightly warmer in winter. However, these advantages are limited if the farm requires frequent deliveries of heavy materials or uses energy-intensive equipment. Rooftop farms often have a social function as well. Schools use them for science lessons, restaurants invite customers to see where ingredients are grown, and community groups organize volunteer sessions. These activities can make urban agriculture visible and educational, even when the total harvest is modest. The main barrier is not always technology. Building permissions, safety rules and maintenance costs can slow projects before the first seeds are planted. For this reason, successful rooftop farms usually begin with a realistic plan: engineers check the roof, growers choose suitable crops and managers decide who will care for the site throughout the year.