Pollution refers to the social harm caused to the natural environment and living environment by various pollution sources or other artificial causes;. According to the above definition, which of the following options is not a nuisance? ['Wastewater from a chemical plant causes nearby farmland pollution.', "Someone's puppy barks at night, preventing neighbors from resting.", 'roup of people often poachs, resulting in fewer animals in the surrounding forests.', 'Husband and wife quarreled with each other, and the wife was injured and hospitalized.']