What is acne? Detailed answer

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What is acne? Detailed answer

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What is acne?

Eels are fish. Like all fish, they have a backbone, live in water and breathe with gills. They are cold-blooded, which means that their body temperature changes depending on the temperature of the environment. Most eels live in the seas. Some species live in fresh water most of their lives, but they also spend part of it in salt water. All eels spawn only in salt water.

North American freshwater eels. They live in lakes, ponds, rivers, from the Atlantic to the Mississippi River. Sea eels, moray eels, live only in salt water, and can be found along the mountainous coast of southern California, the Gulf of Mexico, and the Atlantic coast of the United States.

Eels have a varied diet, including dead fish and small living organisms. They lead a nocturnal lifestyle. Sometimes young eels can be found in the shallow waters of the seas and in the evening. Disturbed, they quickly burrow into the sand. The skin of eels is smooth and slippery. Some freshwater and other types of eels have scales on their skin. Freshwater eels move long distances to the sea to spawn there, although they live in fresh water.

Eels travel from fresh water to seas and oceans and back without harm to life. Biologists explain this by the fact that the mucous membrane of the body protects them from damage. Freshwater eels, moray eels and some other species have an amazing ability to recover from injuries that would lead other fish to death. The substance in the blood of acne prevents the penetration of infection.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which aircraft device completely contradicts its slang name?

The flight recorder, which is installed on aircraft to record information about the technical condition of all devices, as well as the actions and conversations of the crew, is often called the "black box". Although in fact this device does not have the shape of a box, but a ball or cylinder, and its color is not black, but red or orange, so that it is easier to find in case of an accident.

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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Random news from the Archive

Jaw movement generates electricity 18.09.2014

Canadian scientists have created a "smart" strap that can convert and store mechanical energy from jaw movements (for example, in the process of chewing gum). The accumulated energy in the future can be used to power electronic devices.

To generate electricity, the device uses a polymer material with piezoelectric properties. When stretched and compressed, a potential difference arises in the material, and an electric current appears in the circuit. The strap is attached to the lower jaw with headphones and special devices. When the jaw moves, the strap stretches and contracts, resulting in an electrical current.

According to scientists, only during meals, such a device can develop an average power of up to 7 mW. The researchers found this out during experiments in which they asked participants to chew gum. Experts concluded that the power developed by the strap is too small to power modern electrical appliances. But they are going to eliminate this drawback by increasing the number of layers of piezoelectric material in the strap.

In particular, according to scientists, 20 layers of piezoelectric material with a total thickness of 6 mm will be enough to obtain an output power of 200 microwatts, which is enough to power a hearing aid.

The piezoelectric material is the most expensive constructive part of the apparatus, the cost of which is about $20 per prototype. Scientists believe that the purchase of a "smart" strap will be more profitable than buying conventional disposable batteries: it will be able to justify the investment in about 3 years. In addition, the developers pay attention to the reduced negative impact on the environment in the case of using an unusual device compared to traditional batteries.

According to experts, a "smart" strap can be useful for providing electricity to various miniature devices, incl. implants and low-power gadgets. In the future, engineers plan to equip the strap with a special chip that will control the power circuits.

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