A chemical alteration to a pesticide. Chemical or biological breakdown of a complex compound into simpler compounds. The study of the characteristics of human populations such as size, growth, density, distribution, and vital statistics. The destruction or removal of the myelin sheath which is composed of a lipoid substance and envelops certain nerve fibers. The movement of suspended or dissolved particles from a more concentrated region to a less concentrated region as a result of the random movement of individual particles.
Diffusion tends to distribute particles uniformly throughout the available volume.
An order of insects that includes flies and mosquitoes. The movement of a chemical from the blood to other tissues. A mutagenic bioassay used in assessing the ability of a chemical to penetrate gonadal tissue and produce genetic damage. These males are then mated with females, which after about the 14th day of pregnancy are sacrificed and examined for the number of total implantations and viable fetuses. A pesticide formulation which consists of an active ingredient impregnated on a finely ground carrier such as clay, talc, or calcium carbonate.