The immeasurable diversity of nature on our planet: scientists consider to 3500 species of mammals and more than 850 000 species of insects. Despite the fact that already for many centuries is explored flora and fauna, and annually published reports of discoveries of new species, which find even in long inhabited and explored areas. So, in the early 30-ies of our century was known to 800 thousand species of butterflies, and by 1942 he already 900 thousand species. Even less studied is the life in the oceans, which often make sensational discoveries.
The existence in the seas and oceans are dangerous animals the people knew even in ancient times, although along with very real views were widespread tales of fantastic sea monsters. It was known about the danger of injections of some animals, on the toxicity of some marine animals by eating them for food and, of course, about large aggressive fish – the shark. Currently published a lot of papers devoted to the description of poisoning from the ingestion of marine animals in different parts of the World ocean. So, only in 50-ies of our century from such poisoning suffered tysjacheletij. According to the researchers, only poisonous fish there are about 500 species, most of which live in the salty waters.
By climatic and geographical basis distinguish polar, Northern, temperate, subtropical and tropical zones. The majority of our population lives in Northern and moderate climatic zones and therefore are not familiar with the fauna and flora of the tropics. Year-round abundance of warmth in them contributes to the rapid development of wildlife. So, in the Amazon region, has about 15 thousand different species of animals. Continue reading
The pond could become a real jewel of your garden, but only if it is properly designed, constructed and receives appropriate care.
The choice of location of pond: This must not be a shady place under the trees. The falling leaves will pollute the water and growth of roots may cause damage to the coating of the walls of the reservoir or even the plastic mold.
Construction material: the most commonly used plastic film or as finished shapes. If you are planning a large pond, it is better to use the tape if less than 4 sq. m. – the simplest way using ready-made forms.
To fill small ponds are frequently used plants meadow and wetlands.
Aquatic plants suitable for settlement of a pond:
In the vicinity of the ground water is never completely dry.
In this area you are planting moisture-loving plants such as astilbe of arendse, function (host), Siberian iris. tradescantia virginiana, daylilies, bergenia, bergenia, loosestrife, marsh forget-me-not, globeflowers. In this area you can plant grasses such as miscanthus, Mannik great. Trees and shrubs areas of wet meadows: Japanese or Manchurian willow, cotoneaster horizontal, ornamental maples. Trees and shrubs conifers which love shady and moist sites: rhododendrons, azaleas. the hydrangea.kalmii. Continue reading
The black sea is an inland sea basin of the Atlantic ocean. The Bosphorus Strait connects Black sea with Marmara, then through the Dardanelles with the Aegean and Mediterranean seas. The Kerch Strait connects the Black and Azov seas. North sea cuts deeply into the Crimean Peninsula. On the surface Black sea water passes the border between Europe and Asia Minor. A distinctive feature of the Black sea is complete (except for some anaerobic bacteria) absence of life at depths greater than 150-200 m due to the saturation of deep layers of water with hydrogen sulfide. The continental climate of the Black sea. The black sea coast of Caucasus and the southern coast of the Crimea being protected by mountains from cold Northern winds and have a mild Mediterranean climate and South-East of Tuapse is humid subtropical. A strong influence on weather over the Black sea has the Atlantic ocean, which formed a large part of the cyclones, the sea brings rainy weather and storms. In the North-East coast, especially in the area of Novorossiysk, start low Caucasian ridge is not a barrier to cold North winds. South-westerly winds in the black sea region receives the warm and wet Mediterranean air mass. So for the majority of the Black sea is characterised by warm wet winters and hot dry summers.
The black sea fills izolirovannogo, located between Southeast Europe and Asia Minor. This depression was formed in the Miocene epoch, during an active orogeny that divided the ancient Tethys ocean into several separate water bodies (of which more later, except the Black sea, formed the Azov, Aral and Caspian seas). Black sea depression consists of two parts — Western and Eastern, separated by show, which is a natural extension of the Crimean Peninsula. Continue reading
Snorkeling and diving are the things for which many go to Thailand. But on the coral reefs of tropical Islands are not only colorful fish. There dwells a whole bunch of frankly dangerous creatures.
The underwater world is fraught with many dangers. Poisons that are owned by some underwater inhabitants, is so strong that it can kill a person within 5-10 minutes. For this reason, the main recommendation of diving instructors is the total prohibition to touch anything under water. There can be only view. And it is advisable to do this as accurately as possible.
1. Before you fish the perch family, is called Scorpionfish.
On the body of this fish is full of spikes, which if they touch, injected into your skin very strong poison, which can lead to paralysis of the respiratory system. Float to the surface you can not make it. Even if you have time, then there is no guarantee that your life will not be completed on Board your boat. There is no cure. Medical aid is powerless. In the nearest institution, even if you act quickly, since the middle of the Andaman sea, you will deliver at best around three hours. To stop the heart and breathing can last 10 minutes, the portion that got careless chelovechestva, is large enough. Operator.
2. She. Fish-Scorpion is very cleverly disguised as coral. From the far distance, it is almost invisible. This disguise allows her to successfully prey on small fish, which it not noticing, often swims near, allowing a predator without much effort to eat them. Continue reading
The shark is one of the most amazing out of all those living on earth creatures. These fish had survived all kinds of ice ages and other disasters that were not in the teeth to the same mammoths and dinosaurs. It is not excluded that sharks will survive and the human race, so they are arranged.
In order to survive!
Interestingly, the body of the shark can regulate the salinity of the water, so one of the scientists foretold of impending disaster – desalination of the oceans due to glacial melting – the shark practically does not threaten.
Even the lack of oxygen not to confuse the predator. Because the shark at any time is able to “turn off” the part of the brain, and go into suspended animation to conserve energy.
These predators have a unique vision, is several times larger than a cat. A shark can see in opaque sea water at a distance up to 15 meters. Her eyes different from human frequency perception: we have 24 frames per second, the sharks – 45 fps. Besides, as it turned out, sharks see black and white picture, and perceive the world in color. Continue reading