Why does genetic variation increase the chance that some individuals in a population will survive? Genetically diverse populations display high phenotypic variation. If changing environmental conditions favor a particular phenotype there is a good chance that genetically diverse population will have some individuals who have that advantageous phenotype.
As well, the candles produce large particles in their smoke and there have been concerns about how safe it is to regularly breathe in this smoke. Mosquito coils: Like citronella candles, mosquito coils produce a smoke that confuses mosquitoes. The coils contain the insecticide allethrin.
1 Ear Candling Tip: Bee's wax is naturally very soft and pliable. If your candles become warm or soft, place them in the freezer for about 10 minutes. 2  Ear Candling Tip: Use plastic wrap or foil to cover and protect the inside of the bowl from the burnt ash, wax, and debris.