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The food chain, Sea

“Natural systems” – Global. The continents and oceans. Zonal natural complexes. Savannah. The natural areas. Climate. Taiga. Major. The lower part of the atmosphere. Flora. The Arctic desert. “Component”-in translation from Latin means “a constituent part of a whole”. J. Lamarck. Mixed and wide kristenye forest. The whole biosphere.

“Diversity of organisms” – Plants. HOMEWORK: PREPARE FOR WRITTEN TEST EXAMINATION OF THE ENTRIES IN THE NOTEBOOK. 2. Aquatic environment (fish, shellfish, seaweed, whales, jellyfish, etc.). Viruses. 4. Land-air-water (waterfowl, dragonflies, mosquitoes, etc.). 3. Terrestrial-aquatic (amphibians, crocodiles, marine turtles, etc.).

“Habitat” organisms – Each organism adapted to life in a particular environment. Environment – the conditions surrounding the organism. Distinguish between land– air, water and soil environment. Adaptations of plants. Well developed organs: root, stem, leaves, etc. Adaptations for pollination: bright color of flowers, the fragrance of Fixtures to maintain moisture. Continue reading

Catfish: aquarium species

Almost all members of the family of catfish unpretentious, so they are recommended even for beginner aquarists. But still some features to care for them.

In a group of catfish includes more than 200 species of fish, but in the aquarium you can hold not all members of this family. This is due to the physiological characteristics of individual species.

Some catfish in adulthood reach an impressive size, so they begin to pose a danger to small inhabitants of the aquarium. In addition, there are breeds which differ quite aggressive in nature, so they too are not suitable for keeping with other fish.

Popular species of catfish

Of course, you can only breed catfish, but the majority of aquarists prefer to choose peaceful members of this large family that they get along with other Pets.

The most popular species suitable for aquarium rearing are: Continue reading

Popular fishing

Venezuela is one of the best and most visited places for sport fishing in the world. Here is a great opportunity, both for marine and for freshwater fishing.

Freshwater fishing

Based on the opinions of most anglers, the best fishing occurs in Venezuela on lake Guri. Lake Guri is one of the largest artificial lakes in the world (about 175 km long and 48 km wide). It appeared in the construction of a dam on the river Caroni, a tributary of the great Orinoco. Favorable ecological situation and perfect conditions for fish to have made this place very popular among fishing enthusiasts from all over the world. Of special interest on the lake is fishing in a strong and aggressive tropical peacock bass pavón (average specimen weighs about 5 kg) and predatory fish Paru – distant relative of the piranha that inhabit the Amazon and Orinoco.

Another popular fishing spot in Venezuela is located in the district of waterfalls ARIMA (river Paragua), in the state of Bolivar in South-East of the country. Here you catch Paro and Aymara. It was here that they caught the largest specimen of Para (weight was 17.8 kg) and thus set a world record IGFA. The best time for fishing is from January to may. Continue reading