Synonyms exampleexamplecase ▪ instance ▪ specimen ▪ illustrationThese are all text for just a factor or circumstance that may be normal of a particular group or set, and is usually utilized to support an argument.
It really is estimated that in a very fifty year interval close to 1.four billion lbs . of PCBs were being produced and their intensive application has resulted in widespread contamination of soils, sediments, aquatic environment and bioaccumulation during the fat of biota. The accumulation of PCBs in organisms and the publicity of some industrial workers was in the beginning a lead to for worry. The 209 PCB congeners are divided into two principal groups on the basis in their toxicity; the “dioxin-like PCBs”, a gaggle of 12 PCBs displaying equivalent toxicological Attributes on the dioxins and the non-dioxin-like PCBs, which happen to be of lessen toxicity and which happen to be Usually the predominant congeners in surroundings samples.
instance anything for example an object, a point or possibly a situation that reveals, clarifies or supports Anything you say; a issue which is usual of or represents a certain team or established:
Business octaBDE is very persistent in the atmosphere, whose only degradation pathway is through debromination and also the production of bromodiphenyl ethers, which them selves may be harmful.[32]
The insecticidal Qualities of DDT and DDD tend to be more due to their molecular condition than in the chemical interactions with precise species. Structurally DDT molecule incorporates two tetrahedral C during the ethane unit, and two flat benzene rings. In insects, DDT thanks to its a few dimensional form turns into widged from the nerve channel that leads out from the cell in the nerve. This channel typically transmits impulses only as needed because of the sodium ions. A continual series of Na+-initiated nerve impulse is created, since the DDT molecules maintain the channel open. Subsequently, the muscles of the insect twitch consistently, at some point exhausting it with convulsions that bring about death.
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The critical physical Houses of PCB mixtures are that they're liquids, have reduced water solubility and exceptional dielectric Qualities. The water solubility and vapour tension lower index as being the diploma of substitution will increase, and the lipid solubility improves with raising chlorine substitution.
Chlordane, an insecticide employed to manage termites and on A variety of agricultural crops, is understood to become lethal in many species of birds, which include mallard ducks, bobwhite quail, and pink shrimp; It's really a chemical That continues to be inside the soil that has a documented 50 percent-lifetime of one 12 months.
along with the song in collaboration along with her sister, Susan. Their information stirred the hearts of visitors and became a greatest-selling ebook inside their day. In 1861 the poem was put to music by William Bradbury, who added the refrain and revealed it being a A part of his hymnal assortment, The Golden Sower
Bioaccumulation is the phenomenon whereby a chemical reaches a greater focus in the tissues of the organism than in the surrounding natural environment (water, sediment, soil, air), principally by respiratory and dietary uptake routes. The magnitude of bioaccumulation depends upon the hydrophobicity in the chemical and the power of the species to eliminate the chemical from its system by excretion and/or metabolism. Bioaccumulation his response can be generally known as bioconcentration, and biomagnification. The preferential accumulation of a chemical in a very residing organism by all routes of uptake with regard to concentrations in the organism’s publicity atmosphere (h2o, sediment, soil) is expressed as Bioaccumulation Element (BAF).
It's also been applied being a Uncooked substance for artificial rubber, for a plasticizer for PVC, as being directory a porosity controller in the manufacture of electrodes, and as wood preservative. Use of HCB has become uncommon.
When top rated predators try to eat people who Reside lower down the foodstuff chain, the human body shops additional POPs than ever, developing difficulties in reproductive life, endocrine dysfunction and in some cases death in critical cases.
When officers searched the home to investigate, a spent casing with bullets to match were being spotted in his bedroom. —
: a proceeding typically in the form of a suit for injunction introduced to obtain a call as for the constitutionality of the statute b : the described information, procedural background, and particularly final decision within an motion — landmark case : a case that marks a major turning stage on a particular challenge — primary case : a case so effectively reasoned and essential in the rules of legislation established and in the principles declared that it becomes properly-recognised and is particularly often cited by courts and lawyers as settling the factors of regulation ruled on and as practical in resolving new questions of law c : the evidence and arguments offered by a celebration in courtroom