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sound pollutionnoise can have a detrimental effect on wild animals, increasing the risk of death by changing the delicate balance in predator or prey detection and avoidance, and interfering the use of the sounds in communication, especially in relation to reproduction and in navigation
sound pollutionnoise can have a detrimental effect on wild animals, increasing the risk of death by changing the delicate balance in predator or prey detection and avoidance, and interfering the use of the sounds in communication, especially in relation to reproduction and in navigation. these effects then may alter more interactions within a community through indirect (“domino”) effects.[20] acoustic overexposure can lead to temporary or permanent loss of hearing. an impact of noise on wild animal life is the habitat of usable habitat that noisy areas may cause, which in the case of endangered species may be part of the path to extinction. noise pollution may have caused the death of certain species of whales that beached themselves after being exposed to the loud sound of military sonar.[21] (see also marine mammals and sonar) noise also makes species communicate more loudly, which is called lombard vocal response.[22] scientists and researchers have conducted experiments that show whales' song length is longer when submarine detectors are on.[23] if creatures do not "speak" loudly enough, their voice will be masked by anthropogenic sounds. these unheard voices might be warnings, finding of prey, or preparations of net bubbling. when one species begins speaking more loudly, it will mask other species' voice, causing the whole ecosystem eventually to speak more loudly. marine invertebrates, such as crabs (carcinus maenas), have also been shown to be negatively affected by ship noise.[24][25] larger crabs were noted to be negatively affected more by the sounds than smaller crabs. repeated exposure to the sounds did lead to acclimatization.[25] european robins living in urban environments are more likely to sing at night in places with high levels of noise pollution during the day, suggesting that they sing at night because it is quieter, and their message can propagate through the environment more clearly.[26] the same study showed that daytime noise was a stronger predictor of nocturnal singing than night time light pollution, to which the phenomenon often is attributed. anthropogenic noise reduced the species richness of birds found in neoptropical urban parks.[27] zebra finches become less faithful to their partners when exposed to traffic noise. this could alter a population's evolutionary trajectory by selecting traits, sapping resources normally devoted to other activities and thus leading to profound genetic and evolutionary consequences.[28]

old, so terribly old that she could not have grown older, and had stayed at the same age for twenty years. she could never have been pretty; but she was always beautiful. she hobbled about the house in spotless white with one hand resting on her waist to balance her stoop and the other telling the beads of her rosary. her silver locks were scattered untidily over her pale, puckered face, and her lips constantly moved in inaudible prayer. yes, she was beautiful. she was like the winter landscape in the mountains, an expanse of pure white serenity breathing peace and contentment
the potrait of a lady