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Amoebiasis
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Amoebiasis

There are several species of amoebas that can be found in man. Among them are Entamoeba histolytica and Entamoeba coli. The only pathogenic species, under certain conditions, is E. histolytica, although in a large number of cases it lives as a commensal in the large intestine. E. histolytica has a wide geographic distribution and is found in virtually every country in the world.

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Groundwater

Groundwater, formed by the infiltration of rainwater into the soil, which occupies its pores and rock crevices. This water seeps into the soil until it reaches a layer of impermeable material. Next Contents: The Planet Inside and Out
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Physical states of matter

When we refer to water, the idea that comes to mind immediately is that of a cool, colorless liquid. When we refer to iron, we imagine a hard solid. Already the air brings us to the idea of ​​matter in the gaseous state. All matter that exists in nature comes in one of these forms - solid, liquid or gaseous.
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Hydroelectric plants

Engineers consider water behavior when planning hydroelectric plants. These plants harness the hydraulic potential of a river, using natural gaps such as waterfalls, or artificial, produced by deviating from the original course of the river. In them, the strength of the river's backwaters is used for the production of electricity.
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Water treatment plants

Many houses in large cities receive piped water from rivers or dams. This water is subjected to special treatments to eliminate impurities and health-damaging microbes. First, water from the river or dam is carried through thick pipes, called water mains, to water treatment plants.
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Water properties

Water is a solvent In the environment it is very difficult to find pure water because of the ease with which other substances mix with it. Even rainwater, for example, when falling, brings air impurities dissolved in it. One of the important properties of water is the ability to dissolve other substances.
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Injectables

Injectable hormonal contraceptives contain progesterone or combination of estrogens for parenteral (intramuscular or IM) administration with long-term hormone doses. It consists in the administration of progesterone alone, parenterally (MI), with contraceptive effect for periods of 1 or 3 months, or a monthly combination of estrogen and progesterone for parenteral (MI).
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Air pollution and our health

As we have already seen, the layer of air that contacts the Earth's surface is called a troposphere that is between 8 and 16 km thick. Due to natural factors such as volcanic eruptions, relief, vegetation, oceans, rivers and human factors such as industries, cities, agriculture and man himself, the air suffers up to a height of 3 km. , influences on its basic characteristics.
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The winds

The moving air is called wind. Its direction and speed affect the weather conditions. To predict when an air mass will reach a particular location, it is essential to know the speed of the winds. Air movement relative to the Earth's surface can range from calm and windlessness to the formation of hurricanes that cause wind destruction at more than 120 kilometers per hour.
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Air humidity

Air humidity refers to the amount of water vapor present in the atmosphere - which characterizes whether the air is dry or humid - and varies from day to day. The high amount of water vapor in the atmosphere favors the occurrence of rainfall. With low air humidity, it is difficult to rain. When we talk about relative humidity, we compare the actual humidity, which is verified by devices such as the hygrometer, and the theoretical value estimated for those conditions.
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The Noble Gases

These gases are difficult to combine with other substances, corresponding to less than 1% of air. They are not used by the body of living beings, they enter and leave unchanged during breathing. Among the noble gases, argon is the most present (0.93%). In ordinary (incandescent) lamps, argon is widely used as its production is cheap.
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The great diversity of ecosystems

Natural ecosystems - forests, forests, deserts, meadows, rivers, oceans, etc. Artificial ecosystems - man-made: ponds, aquariums, plantations, etc. Considering the physical environment, we have to consider: Terrestrial Ecosystems Aquatic Ecosystems When, from any point, we observe a landscape, we perceive the existence of discontinuities - river banks, forest boundaries, field borders, etc.
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Taiga

Also called coniferous forest or boreal forest. It is located in northern Alaska, Canada, southern Greenland, part of Norway, Sweden, Finland and Siberia. Departing from the Tundra, as you move south, the favorable season is longer and the climate milder. As a result, the vegetation is richer and the Taiga emerges.
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The air

There are many situations in our postponed day when we notice the presence of air. When we feel the gentle breeze on our face, when the wind blows hard, swaying the tree branches, when we breathe and feel the air in and out of our lungs, we are aware of the presence of air. We cannot see the air or touch it.
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The air

There are many situations in our postponed day when we notice the presence of air. When we feel the gentle breeze on our face, when the wind blows hard, swaying the tree branches, when we breathe and feel the air in and out of our lungs, we are aware of the presence of air. We cannot see the air or touch it.
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Harmonic Intraspecific Relations

Relationships that occur in individuals of the same species, with no disadvantage or benefit for any of the species considered. They comprise the colonies and societies. Grouping of individuals of the same species that reveal a deep degree of interdependence and are linked to each other, making life impossible for them when isolated from the set, and may or may not have division of labor.
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Slavism or symphilia

It is an association in which one species benefits from the activities of another species. Lineu described this association with some grace, stating: Aphis formicarum vacca (the aphid of the genus Aphis is the "cow" of ants). On the one hand, slaving has hostile characteristics, as aphids are held captive within the anthill.
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Fire and the Ecological Succession

As in all tropical savannas, fire has been an important environmental factor in Brazilian savannahs for many millennia and has, therefore, acted in the evolution of living beings of these ecosystems, selecting plants and animals with characteristics that protect them from the rapid burns that there they occur.
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Ecosystem

Set formed by a biotic community and interacting abiotic factors, resulting in an exchange of matter between living and non-living parts. In functional terms, it is the basic unit of ecology, including biotic communities and abiotic environment mutually influencing each other in order to strike a balance.
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Mutualism

Association in which two species involved benefit, however, each species can only live in the presence of the other. Among examples we will highlight. Lichens - Lichens are associations between unicellular algae and fungal cereals. Algae synthesizes organic matter and provides fungi with part of the food produced.
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Ecological succession

Orderly process of setting up and developing a community. It occurs over time and ends when a stable community is established in the area. The Succession Steps Let's take as an example a completely uninhabited region, like a bare rock. The set of conditions for plants and animals to survive or settle in this environment are very unfavorable: Direct lighting causes high temperatures; The absence of soil makes it difficult to fix vegetables; Rainwater does not settle and quickly evaporates.
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