The observation that the relative frequencies of melanic to light peppered moths changes with the color of tree bark provides support for Blank______.Multiple choice question.human-induced selectionnatural selectionindustrial selectionindustrial pollution

Regarding the peppered moth, many studies have shown that in polluted areas, the Blank______ form of the moth is favored by natural selection, and in unpolluted areas, the Blank______ form of the moth is favored.Multiple choice question.toxic; nontoxicdark (melanic); light (peppered)nontoxic; toxiclight (peppered); dark (melanic)

Scientists have observed that when air pollution is significantly reduced, the frequency of the melanic form of peppered moths Blank______.Multiple choice question.randomly fluctuatesdecreasesincreasesremains constant

Selection for dark-winged moths in a population of moths with pigmentation that varies from light to dark is an example of _____ selection.Multiple choice question.artificialdirectionaldisruptivestabilizing

In certain polluted areas of the world, populations of moths have been shown to change over the years with dark forms becoming more abundant than light forms; this phenomenon is called Blank______.Multiple choice question.industrial melanismartificial melanismpollution melanismnatural melanism

In 1896, J. W. Tutt proposed that light colored peppered moths were more visible to predators on Blank______.Multiple choice question.sooty trees that have lost their lichens due to pollutionthe trunks of white birch treestrees that have died due to heavy pollution