Photo by: fox17. Organic halogen compounds are a large class of natural and synthetic chemicals that contain one or more halogens (fluorine, chlorine, bromine, or iodine) combined with carbon and other elements. The simplest organochlorine compound is chloromethane, also called methyl chloride (CH 3 Cl).
Although ticks are commonly thought of as insects, they are actually arachnids like scorpions, spiders and mites. All members of this group have four pairs of legs as adults and have no antennae.Adult insects have three pairs of legs and one pair of antennae.here are two groups of ticks, sometimes called the hard ticks and soft ticks. Hard ticks, like the common dog tick, have a hard shield just behind the mouthparts (sometimes incorrectly called the head); unfed hard ticks are shaped like a flat seed.
Ticks Are Ancient Arthropods. Though it might be hard to see from our perspective as a blood host, ticks do serve an important role in the ecological system. Every organism serves a purpose, and the lowly tick is no exception.