Gardens Above the Street
In many crowded cities, rooftops are becoming a new home for gardens. What was once empty space is now being used to grow herbs, vegetables and even small fruit trees. The idea appeals to residents (9) ________ have little or no access to private gardens. Before planting begins, however, experts must check whether a roof is strong enough to cope (10) ________ the extra weight of soil and water. Lightweight containers have (11) ________ developed for buildings where ordinary beds would be too heavy. Some projects also include (12) ________ small pond, which can attract insects and other wildlife. Although a rooftop plot will not produce huge quantities of food, it can still make a difference. Plants keep buildings cooler in summer and, (13) ________ a result, reduce the need for air conditioning. They may also hold rainwater for longer, so drains are (14) ________ likely to overflow during storms. For many gardeners, though, the greatest benefit is simply having a peaceful place (15) ________ which to relax. In the long (16) ________, such spaces may become an ordinary part of city life.