Three most common allergies – Causes of allergy development
Three most common allergies – causes of allergy development – Regardless of what causes allergy,
it is always inadequate reaction of the body. Allergy is considered a disease of civilization.
Which affects approx. 20-30% of people, and this number is constantly growing.
Recent studies indicate that the risk of developing allergies carry the genes.
Food allergies: In the food allergy is caused primarily by protein. Allergens work even after heat treatment and after passing through the digestive tract. The spectrum of food allergies is very wide. Mostly allergic to eggs, fish, hazelnuts, milk, celery, fruit, vegetables, flour, peanuts, meat, potatoes and cocoa.
Pollen allergies: This is one of the most common types of allergies. Its occurrence is related to the flowering of plants, whose pollen is the patient’s allergen. Most often they are grass pollen, less common perennial, shrubs and trees. Sometimes the disease persists throughout the year, but during the flowering of the plant. Symptoms such as swelling of the mucous membranes, rhinitis, tearing, and breathing difficulties occur.
Animal allergies: The most common is allergy to cats, dogs, rabbits, hamsters, horses and exotic birds. Allergens in this case are skin or fur. However, allergens can also cause faeces, urine and saliva of animals.
Aggression among animals
Aggression among animals – Many species of animals avoiding battles, shows aggression usually defending the defenseless young. Musk oxen during the attack of wolves to protect offspring by surrounding them with a circle – forming on the outside wall with sharp corners. Blackbirds attack cats located near their outlet. Sow boar in fear of children can compel a man to flee to the tree.
Territorial behavior – Fighting for supremacy
Territorial behavior – The primary manifestation of aggressive behavior of animals is called. territorial behavior. Each species has its own territory, the living space. It provides them with the right resources present in the area. The most important of these is food (including water), the presence of the opposite sex partner and a suitable place to nest, burrow or other accommodation.
Tanzania Udzungwa mountains monkeys
Tanzania Udzungwa mountains monkeys – Researchers from the University of New York. Studied in the Udzungwa Mountains in Tanzania population of monkeys Gerez. Studies have shown that environmental changes threaten the animals chief much more than previously assumed. Danger constitute both a decreasing area of forests, as well as grinding them into smaller areas at the expense of farmland.
Protected animals Afghanistan
Protected animals Afghanistan – Under the protection of the law is currently 48 species of animals. Recently, into the Red Book of the country entered 15 new endangered species. Together with the smallest bird of the world – Acrocephalus hiwae (so far resulted only two specimens).
Lake Baikal bottom – Russian mini-submarine Mir–2
Lake Baikal bottom – In July, 2008. Russian mini-submarine Mir–2 reached located at a depth of 1637 m the bottom of the Siberian Lake Baikal. It was the deepest immersion in fresh water in history. Lake Baikal contains 20% of the world‘s fresh water. The lake that formed approx. 20 million years ago, living approx. 1000 unique species of animals and plants. During immersion, scientists collected samples at different depths of the ecosystem so that they could determine the impact of global warming on the lake.
Papua New Guinea
Papua New Guinea – Although only takes a 462,840 square kilometers, according to current statistics, the country lives 6-8% of all species of living organisms on Earth. The report of the international conservation organization World Wide Fund (WWF) shows that in the years 1998-2008 in New Guinea and in the immediate vicinity were discovered 1,060 new species of animals.
Eye evolution – Development of sight
Eye evolution – Development of sight – We see the world around us through opsins – proteins containing photosensitive dyes, produced by the receptors of the retina. In humans and other animals with type chordates – Branchiostoma lanceolatum, fish, amphibian, reptile or bird. The variety is known as c–opsin. Meanwhile, in arthropods and cephalopods – so the spiders and octopuses. This is the function differently built r-opsin. So it looks as if nature created two different ways of development of sight, at a very early stage of evolution.
From mouse to elephant
From mouse to elephant – The size of modern mammals oscillates between individuals of the size of the coin until after the giant animals, measuring tens of meters. The researchers found that before mammals reached the size of a mouse the size of an elephant, had to pass at least 24 million generations.
Longest living animal
Longest living animal – The longest life in mammals has a bowhead whale. His life takes second place in the animal kingdom – can live even 210 years. Defeats him only one animal – Edible mussel Arctica islandica (Arctica islandica), which lives up to 400 years.