lunes, 7 de septiembre de 2015

The 10 Most Important Types Of Sharks

Bull shark

Named for their sturdy appearance and aggressive reputation, the bull shark is one of the most common large sharks around the world. Despite being primarily a marine species, it is known for his penchant for fresh water and can often be located in rivers, estuaries and even in some lakes in Central America. The bull shark has also been found about 3,000 kilometers upstream in rivers such as the Amazon and the Mississippi.



Hammerhead shark

Perhaps the most characteristic of all species of sharks, hammerheads is easily recognized by the particular shape of his head. Worldwide are about 10 species of them, some of which grow up to 6 meters long and are known to attack humans.



Blue Shark

Blue sharks are among the most common sharks and those who take great diversity of territories; They can be commonly seen both in ocean waters as well as occasionally on the coast. Known for its extraordinary migratory abilities, some of them have come to swim thousands of kilometers between continents in just a few months.



Tiger shark

As fearsome as the name suggests, tiger sharks are rightly respected for its aggressive nature and its astonishing predatory abilities. Baptized with that name by the patterns on their skin, these sharks are by far the most numerous members of his immediate family.



White shark

It is hard to overestimate the reputation of the great and majestic white shark. One of the great ocean predators, is the most easily identifiable shark in the world, thanks to its distinctive and beautiful color, black eyes and ferocious teeth and jaw, which for decades have graced many magazine covers.
The white shark is one of the most widely distributed sharks has, thanks to its unusual ability to maintain the temperature of his body higher than the surrounding environment, allowing it to survive happily in very cold water.



Basking Shark

Second in size only to the whale shark, basking sharks are huge creatures whose size is more surprising when you consider that only eat plankton. Usually they swim with their huge mouths open width, filtering tiny food particles as the water passes.



Tiburon wide mouth

The Wide Mouth Shark is one of the most strange and mysterious family of sharks members. Only 22 specimens have been reported since it was captured and first described in 1976. Many of the details of his life are still unknown.



Whale shark

The largest of all sharks and the largest fish, the whale shark is one of the most dramatic ocean views. Its large size, their distinctive patterns and its enormous frontal mouth make it instantly recognizable and can be commonly seen wandering near the surface in tropical and subtropical waters around the world.



Shark Sierra

The saw sharks are among the most distinctive species of shark, with its snout that resembles a saw (called face) embedded with teeth. This curious adaptation is effective, as these sharks use it to remove the muddy or sandy bottom as they seek their prey, which stuns with sudden movements of your saw. The saw shark is the only shark apart from shark eel having six gills, instead of the five or seven usually having another.



Cow shark

The cow shark is the most famous family member. Unlike their closest relatives, who tend to live in deep water, the Shark Cow prefers coastal waters. An indiscriminate carrion eater, eats everything from bodies of other fish, sharks and seals and can behave aggressively towards swimmers and divers.

Top 10 Drugs Most Consumed In México

1. Marijuana
It is "illegal" drug of choice for users. The effects of smoking marijuana include lack of physical coordination, tachycardia, drowsiness and depression.







2. Cocaine
It is a stimulant of the nervous system, creates a strong addiction. The immediate effect of cocaine comes in symptoms such as paranoia, anger yansiedad, the risks are: heart attack, respiratory failure, and stroke, which can cause sudden death.
3. Inhalants
An increase of 1.4% in 2002 to 2.4% in 2008. They cause irritation of the nasal and oral mucosa was observed.
4. Alcohol
The prevalence regarding the consumption of alcohol at least once, was 65.1%, 65.3% in men and 64% women. The immediate effects of alcohol are euphoria and disinhibition, dizziness, nausea, vomiting and a sudden sense of wellbeing.
5. Snuff
Smoking harms nearly every organ of the body. It has been linked to cataracts and pneumonia. The snuff reduces life expectancy and causes lung, larynx, kidney, bladder, stomach, colon, oral cavity and esophagus.
6. Tranquilizers
They are drugs used to treat stress, anxiety and sleep aids. In the short term they generate isolation, fatigue, decrease emotional reaction, and mood changes.
7. Amphetamines
They are a type of drug, stimulating the nervous system and usually comes in capsules or tablets. Increases alertness and generates aggressive and violent behavior.
 8. Ecstasy
Unlike hallucinogens, this drug does not produce sensory disorders. Potentiates memory capacity, has antidepressant and analgesic effects, is used to "hold back".
9. Heroin
The immediate effects to heroin are: dry mouth, redness and heaviness of the body and produces central nervous system. The use of this drug may include spontaneous abortion, venous collapse and infectious diseases through the use of syringes among which may be hepatitis and HIV / AIDS.
10. LSD
It is a highly hallucinogenic drug, and contains chemicals that alter the mood. Damages the central nervous system. The hallucinogenic effects can last up to 12 hours, which causes greater sensitivity.

ICT

What are the "ICT"?

In recent years, ICT has taken an important role in our society and are used in a multitude of activities. ICTs are now part of most sectors: education, robotics, public administration, employment and enterprise, health ...

They have also emerged specialized training centers offering courses in ICT and ICT masters where the subjects they teach focus on developing this area of knowledge.



What types of ICT there?

We can make a general classification of information technologies and communication networks, terminals and services they offer.

1. Networks: fixed telephony, broadband, mobile telephony, television networks or home networks are some of ICT networks.

2. Terminals: multiple devices or terminals that are part of ICT. These are the computer, Internet browser, operating systems for computers, mobile phones, televisions, portable audio and video players or game consoles.

3. Services ICT: ICT offers several services to consumers. The most important are electronic mail, searching for information, online banking, audio and music, television and film, e-commerce, e-administration and e-government, e-health, education, video games and mobile services.