In the World ocean inhabits 180 thousand kinds of animals
According to scientists, man eating fish and other marine animals that uses only 0.02% of the primary production of seas and oceans.
Blood pressure in arthropods 5-10 mm Hg. article on the green frog – about 40, active fish – 65-75, birds and mammals – 120-180.
In rivers of Central Europe is inhabited on average 40-50 species of fish in the Danube – about 70 species, while the Amazon is more than 1 thousand kinds of all kinds of fish.
Many animals are very demanding in terms of ambient temperature. For example, Antarctic fish Trematomus lives at water temperatures of 1.9 O. temperature Fluctuations in their habitat at all times of the year do not exceed 0.1 A. Already at +60 the fish dies. Continue reading
Question som antitrus care about forty people a month. Excited and me
In some underwater Kingdom lived a giant Sami antitrus popularly referred to as the — stick. In the world of aquarium fish will give odds to any snail
Catfish ancistrus this vivid memory of my youth. When I first zoorynka saw this fish, and it appeared in Minsk in the late nineties, I was stunned thinking what a miracle the snail with spikes and tail.
I explained that this is not a snail, and know-how in the aquarium world, the male of antitrus. Females are larger and without thorns.
Even though they cost decently, about three rubles for things, I bought three and soon there were two, and one was zanabili, it is clear for aquarium three in one hundred liters was not enough. Generally this oblem suitable high for the pair, and it is better for one antitrus. Continue reading
Current equipment for ponds and fountains give you the opportunity to complete the project reservoir at various levels of complexity.
Previously, when the device of the reservoir used crushed clay, then began to apply the concrete. In the recent past, concrete constructed ponds of various sizes – both large and not so large. Now in the construction of garden ponds the concrete, as a rule, do not apply – this is a very time-consuming equipment installation and dismantling.
Now in gardening there are two types of materials are ready – made plastic form and flexible insulation materials (PVC film). Before you build a pond from a plastic form you need to submit that visually, the form, in the garden, may be less than the store. In addition, You are limited to finished form. Much more interesting will turn out a cistern from PVC film. The bed of the stream and cascade also vystelite film. The device of the reservoir from PVC film. Continue reading