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Ecology

What does ecology study? The Amazon forest has a rich vegetation. And the variety of animals is also huge. It is estimated that in a single tree of the Amazon forest can be found more than a thousand different species of insects. In fact, if we gather all the rainforests of the planet, we will see that there are more than half of the living species in them.
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The lymphatic system

In addition to the cardiovascular (circulatory) system for blood circulation, the human body has another fluid flow system: the lymphatic system. The lymphatic system comprises the set formed by the lymph, the lymphatic vessels and organs such as the lymph nodes, the spleen, the thymus and the palatine tonsils.
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Parasitism

Parasitism is a more common form of inharmonious relationship than antibiosis. It characterizes the species that settles in the body of another, removing matter for its nutrition and consequently causing damage that can vary in severity, from minor disturbances to the death of the parasitized individual.
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Venerian lymphogranuloma (LGV)

The causative agent of this STD is Chlamydia trachomatis, and its incubation period can be from 7 to 30 days. Signs and Symptoms Venereal lymphogranuloma is characterized by the appearance of a short-term genital lesion (three to five days) that presents as a wound or as a skin elevation.
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Curiosities of the Animal Kingdom

The strongest, the oldest, the loudest, the most poisonous, etc. In this section, we present several curiosities about the animal kingdom, both in Brazil and in the world. Older Animals passed from sea to land 414 million years ago. The world's first land animals include two types of centipedes and a small spider found among plant debris.
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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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