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Breath regulation

People can stay for a few seconds without breathing. It is also possible to breathe faster or slower. In these situations, breathing is controlled voluntarily, that is, as the person wishes, and activity of the diaphragm and intercostal muscles is regulated by a region of the person's brain.
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Exocytosis

While in endocytosis substances enter cells, there is an inverse process: exocytosis. Once endocytized, the material undergoes transformations and the resulting products are absorbed through the membrane of the organite and remaining what remains in the gall bladder from which it will be subsequently exocited.
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Glossary - Letter A

A - Vitamin A or retinol. Fat-soluble vitamin that prevents xerophytmia and hemeralopia (night blindness). Main sources: milk, butter, carrots, pepper, cod liver oil and many vegetables. Chromosome Aberration - Generically, any structural or numerical alteration of chromosomes in the cell.
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10 misconceptions about germs and hygiene we often believe

In our daily lives, we often come across hygiene habits that we have acquired from children, according to our parents' guidelines, or even during the experiences (good or bad) we have been through. On the other hand, there are those who do not care much about these issues. For example, do you wash your hands regularly?
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The birds

Birds comprise a very large and beautiful group of animals. They draw attention for beauty and singing. They are the only animals that have feathers. The conquest of the flight allowed these animals to inhabit places that are difficult to reach and even impossible for other species. They have another major adaptation to terrestrial life, homeothermia, which is the maintenance of body temperature, regulated by the metabolism itself.
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The emergence of the universe

There are several explanations about the origin of the universe. There are religious and scientific explanations on this subject. We will deal here with the scientific view, that is, how scientists seek to explain the phenomena they observe in the universe. It is not known for sure, but scientists estimate that the universe began to exist about 15 billion years ago.
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