Презентация по английскому языку на тему: "Biological weapons."

Biological weapons.

Biological weapons are pathogenic microorganisms or their spores, viruses, bacterial toxins, infected animals, as well as their means of delivery (missiles, guided missiles, automatic balloons, aircraft), designed for mass destruction of enemy manpower, farm animals, crops, as well as damage to some types of military materials and equipment.

this special ammunition and military devices curb biological Biological weapons- weapons. Methods of use of biological weapons:  The aerosol method is the contamination of ground layer of air with particles of the aerosol by spraying of the biological (bacteriological) formulations.  Transmissive method-dispersion of artificially infected disease vectors-ticks, fleas, mosquitoes, etc.  Sabotage method-deliberate covert contamination by biological means of confined spaces of air, water and food in pre-selected areas.

Different means and methods can be used to spread infections: 1) artillery shells and mines. 2) special containers (bags, 5) contaminated household items (clothing, shoes, food). bags or boxes) to be thrown from the air; 3) aerial bomb 4) devices that disperse aerosols with the causative agent of infection from the air;

To defeat people use: botulinum toxin, staphylococcal enterotoxin plague pathogen tularemias anthrax yellow fever  ku-fever Brucellosis Venezuelan encephalomyelitis of horses

For destruction of farm animals use: causative agents of anthrax sap  murrain's  plague of cattle

For destruction of crops use:  pathogens of rust of grain cereals  potato late blight

Kind of microorganisms.

Bacteria-single-celled microorganisms, visible only under a microscope; multiply by simple division. Bacteria cause such serious diseases as plague, tularemia, anthrax, SAP.

therefore Viruses are microorganisms hundreds of times smaller than the smallest species of bacteria. Unlike bacteria, viruses can only develop in living tissue cells and intracellular are parasites. They tolerate drying and freezing well. Viruses are the cause of such serious and dangerous diseases as smallpox, yellow fever, hemorrhagic fever. called

a group Rickettsia is of microorganisms that occupies an intermediate position between bacteria and viruses. In appearance and size, they are close to bacteria, and viruses bring together strictly parasitic nature of existence. Some of significant resistance to drying and freezing. Rickettsia cause diseases typhus, q fever. them have them

Fungi are microorganisms that differ from bacteria in a more complex structure and methods of and prolonged course. reproduction. Spores of fungi are highly resistant to drying, sunlight and disinfectants. Diseases caused by pathogenic fungi are characterized by lesions of internal organs with severe

When signs of the use of this weapon are detected, gas masks(respirators, masks, as well as skin protection products) are immediately put on.

Toxins are the waste products of some bacteria. In the dried state retain toxicity to several months. Extremely toxic is botulism toxin, it causes severe poisoning in humans.

Human disease occurs as a result of: inhalation of contaminated air: In halation of contaminated air; ingress of microbes or toxins on the mucous membrane and damaged skin; consumption of contaminated food and water; bites of infected insects and mites;  contact with infected objects or direct communication with sick people; bacterial agents; injuries by fragments of ammunition equipped with Number of diseases quickly transmitted from sick people to healthy and causes epidemics(plague, cholera, typhoid, flu).