CHOP, security offices, security installations, a private security company

In practice, some PSC staff the posts, not involving the use of in their professional weapons and special means, stateless ULCHO. In the security company they are made, not as private security guards, as well as the "controller", "trainee", "disciples guard," etc. By the end of the trial period, they tend to draw up documents for ULCHO.

Hiring people without identity private security guard, be aware that sooner or later will have to decide on the design of their documents for ULCHO. Currently ULCHO issued to persons under 18 years old, not registered in health care for mental illness,

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Corals use chemical signals to call the fish

Tropical corals are protected from toxic algae to them by signaling molecules that attract the "bodyguards" in the form of fish, gobies, destroying the invaders and saving the colony of polyps from extinction, according to an article published in the journal Science.

"This type of coral recruits small fishes" bodyguards "of an inch long. Trigger for their call is fine-tuned and complex system of odors. As a result of the evolution of the fish have learned to recognize a chemical signal produced by corals, and quickly solve the problem with algae," — said one of the authors, Mark Hay (Mark

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