Band 8.5 model answer: problem and solution

Urban wildlife, from foxes in London to fireflies in Bangkok's suburban parks, is increasingly disoriented by cities that never truly go dark or quiet, and this disruption stems from a small number of identifiable causes with equally identifiable solutions. The primary cause is simply the design priorities of urban infrastructure, which favour human convenience over ecological consequence. Streetlights are left burning all night because switching them off intermittently seems administratively troublesome, and floodlit advertising boards in commercial districts like Tokyo's Shinjuku run continuously because businesses equate constant illumination with visibility and profit. Similarly, night-time construction, delivery trucks, and traffic on ring roads produce sustained noise because scheduling work outside daytime hours reduces congestion for commuters, with little regard for the owls, bats, and insects whose migration, hunting, and mating cues depend on darkness and silence. A second cause is the sheer density of building and road expansion into what were once green buffer zones, meaning wildlife habitats now sit directly adjacent to, rather than buffered from, artificial light and sound sources. Addressing this requires both regulatory and technological measures. Councils could mandate motion-sensor or dimmable LED streetlighting on residential roads, which cuts unnecessary illumination after midnight while still ensuring pedestrian safety. Noise ordinances restricting heavy machinery and freight movement near parks and riverbanks during nocturnal hours would similarly protect species like nightingales that rely on quiet for mating calls. Urban planners should also preserve genuine dark corridors, strips of unlit parkland connecting fragmented habitats, rather than assuming a single central park suffices. Finally, public education campaigns encouraging residents to switch off ornamental garden lighting show that behavioural change, unlike infrastructure retrofitting, costs nothing but awareness. Ultimately, this is a problem of unexamined habit rather than necessity, and modest planning adjustments, not radical redesign, would allow cities and their wildlife to coexist far more comfortably.