The Terror Bird

They were large birds, flightless carnivorous, were the dominant predators in South America during the Cenozoic, between 62 and 2.5 million years. They had a size of 1 to 2.5 meters high. Their wings have evolved to use them as arms to flip a moving prey. They were fast runners. Its closest relatives today are the seriemas Cariamidae family.

Titanis walleri, one of the largest species, is native to North America, one of the relatively rare examples of animals that evolved in South America and moved north extending its biogeographical area after formation of the Isthmus of Panama. The ancestors of T. walleri not known, but there may be awaiting discovery North American species.

Only some bones of T. walleri have been discovered in Florida and along the Texas coast. No complete skeleton comes from North America, only fully understood some American forusrácidos.
 

Photosensitivity

Everyone will burn if exposed to enough ultraviolet radiation from the sun or other sources. However, some people burn particularly easily or develop exaggerated skin reactions to sunlight. Doctors call this condition photosensitivity. For some people, consuming certain medications or plant products—or rubbing them on their skin—can cause photosensitivity. Similar reactions are seen in diseases such as some forms of porphyria (a group of usually hereditary metabolic disorders) or lupus. In another condition, called polymorphous light eruptions (PLEs), dramatic rashes can develop after fairly limited sun exposure.

The most important step toward treating photosensitivity is to identify whether an external substance is causing the reaction, and then eliminate it if possible. Antibiotics are among the most common photosensitizing drugs. Many other natural substances can also cause this reaction. Another commonsense step is to use sunscreen and wear protective clothing, or simply to stay out of the sun.

Some types of photosensitivity may respond to specific treatments such as oral beta-carotene, steroids, or other medications. But there are some treatments for fight to this disease.

Donohue Syndrome

The Donohue Syndrome, also know as Leprechaunism, is a very extrangely disease. It name comes from the thing that the things that are afected for the desease has carachteristics from the gnome and they are more little than the rest of the people.
The carachteristics from the face are that the leprechaunism there are that the ears are very long, the spread and introduction of lower lobe, and the lips are thin.
Other carachteristics are: genital changes, enlarged breasts and clitoris in women and penis too long in males as well as a severe dwarfism. That people usually die very quickly.
The leprechaunism is a genetic disease. The mutation is responsable from the Leprechaunism is that the arm is too short, within the coding sequence of the gene for the insulin receptor (INSR), which produces inactive receptor molecules.
The first time that the leprechaunism was in 1948, by W.L. Donohue.

Do you remember all the tasks that you had learned in Biology classes? We...SI

We began the subject learning about Plate Tectonics:

How many types of plates do you learned?

Boundaries of Construction, Boundaries of Destruction and Passive Boundaries! How quickly you forget all! ;)

And what Rifting means? “How a new sea floor, mid-ocean ridge and ocean are formed”.

And the Earth structure?

And when two plates met... what happen? Ocean-Ocean; Continent-Ocean; Continent-Continent.

And “Did you know that the  10% of all active volcanoes is located in Japan?”

And what about the Earthquakes?

 “A Sismic wave is the way by which the energy in Earthquakes is released, two types: Superficial waves and Internal: P and S waves.”

But HEY! We learned history too:

We talked about BIOQUEMISTRY:

–                    Functional Groups

–                    Carbohydrates

–                    Fatty Acids

–                    Lipids

–                    Amino Acids and Proteins

–                    Nucleotide Structure

And off course, we learned GENETIC. And our teacher our teacher got us to learn more of what Darwin and Lanmmark ever knew.

And... What is the different between MEIOSE and MITOSE?

And talking about GENETICS we learned:

.Transmission of genetic information from

generation to generation.

Genetic terminology.

• Simple genetic crosses involving a single trait.
• • Determination of sex.
• The difference between probability and certainty.
• The work of Gregor Mendel.
• Mendel's Laws.
• Genetic crosses involving two traits.
• Distinguish between sexual and asexual reproduction.
• Predict the possible outcomes of simple genetic crosses.
• Illustrate genetic inheritance.
• Distinguish between probability and certainty.

What is a MUTATION?

A mutation is a spontaneous change in a gene or chromosome. Mutations are random events that affect individual genes or entire chromosomes.

The theories of the evolution.

Jean Baptiste de Lamarck (1744-1829) He considered that species were not fixed but that they proceeded one from another through transformation, in a process in which the changes of the organisms originated as adaptative responses to changes in their environment.

The Darwin-Wallace Theory.  a paper was read in London which summarized the conclusions of the

work that Charles Darwin and Alfred R. Wallace had developed separately. This paper explained a theory of the origin of

species based on the natural selection of variations brought about random. In his book he explained his theory with numerous natural observations made by himself and other naturalists (variation, heredity and selection).

And then to finish the EVOLUTION we discussed about the changes in species along the time with changes in their environment; and our common ancestor.

And remember that Fernando tried to explain us WHAT IS LIFE? But... anyone knowed it...

But men... LIFE IS LIFE!

Merce & Crisi ;)

  

DRUGS

What is drug addiction?
Drug addiction is a disease that involves the dependence of substances affecting the central nervous system and brain function, causing changes in behavior, perception and emotions. The effects of drugs are different, depending on the type of drug and the amount or frequency with which it is consumed. They can produce hallucinations, intensify or dull the senses, cause feelings of euphoria or despair. Some drugs can even lead to madness or death.
The dependence-producing drugs can be of two types:
 - Physical dependence: The body becomes in need of drugs, so much so that when consumption stops they occur strong physiological disorders, which is known as withdrawal.
 - Psychic dependence: The state of euphoria you feel when consumed drugs, and search again leading to consumption to avoid discomfort or for pleasure. The individual feels an urgent need to take drugs, and experience a crash when you do not get emotional.
 Some drugs produce tolerance, which leads the addict to consume more amount of drug each time, as the body adjusts to the consumption and a greater quantity of substance to achieve the same effect.
 Types of Drugs 
Crack and Cocaine
Steroids (Anabolic)
ecstasy
heroin
inhalants
LSD
marijuana
Etc.








Carla and Raquel

World Environment Day

WORLD ENVIRONMENT DAY

Since 1973, and each 5 of June, is celebrating the World Environment Day, an special date, when all the world remmember the importance of our landscapes and moder nature.

The World EnvironmentDay is an event established for the UN General Assembly, in its Resolution 2994 (XXVII) 15 of December of 1972 which began with the Conference of Stockholm (Sweden), whose central theme was the Environment.

The World Environment Day is one of the main vehicles used by the United Nations to promote global awareness of the environment and promote political attention and action on the matter.

The objectives are:

- Give a human face to environmental issues.

1.  Motivate people to become active the agents of   sustainable and equitable development.
2. Promote the role of communities in changing attitudes towards environmental issues.
3.  Promote cooperation, which will ensure all nations and peoples enjoy a safer and more prosperous future as (Sweden), whose central theme was the Human Environment.

To achieve this, we promote all activities and policies aimed at improving care and environment.

This year, the Republic of India, is going to be for the first time, the host of World Environment Day, whose theme is "Forests: Nature at your service." Each year the emphasis is on an important aspect of nature, and revolve around that theme all celebrations and events for that day. This time, losbosques, which are home to 80% of terrestrial biodiversity, as well as covering 31% of the planet, will be the stars.

Silvia Conde

Irene Mártinez 

BIOTECHNOLOGY

Biotechnology is technology based on biology. Gregor Mendel and Pasteur Joham had a great influence in this science. Biotechnology is the use of living things simple, eukaryotic cells in cultivation, for the manufacture of specific man's substances. These are used due to their metabolism and forming ability of substances into a living being.

Biotechnology allows, by applying what we know of biochemistry, microbiology, chemical engineering, and especially genetic engineering, take on the technological properties of microorganisms and cell cultures. Biotechnology covers from traditional biotechnology to modern biotechnology based on the use of new techniques of recombinant DNA (genetic engineering), monoclonal antibodies and new methods of cultivation of cells and tissues.
Its main uses are:

• In medical process. For example getting organisms to produce antibiotics and other drugs.
• It's applied to industrial processes. An example is the obtaining of microorganisms to produce a chemical or the use of enzymes as industrial catalysts.
• It's in the textile industry in the creation of new materials such as biodegradable plastics and biofuels.
• It's applied to agricultural processes. An example is the production of plants resistant to pests and diseases.