No being, animal or vegetable survive without it. But this is not its only paper in the nature. As intemprico agent, it molds rocks, it modifies landscapes, form rivers, seas and lakes. Without this action if it would not have the ground that of the food and is sustentation of great part of the existing vegetal life. It also is essential to regulate the climate of the city, therefore as it has capacity to store heat can collaborate with the cooling of the same one. choices. In cities where the water and the vegetation appear with lesser frequency, the micron urban climate can vary in until 9C more than what in natural environments Since the discovery of the use of the oil as combustible and as substance cousin for the industry could attend to hundreds of warlike and commercial conflicts for the dispute of the call ' ' Negro' gold; '. Today, it is lived deeply searchs it for new power plants, since the forecast for the world-wide reserves does not exceed thirty years. tion software. However, the wars will not have to finish for this reason, quite to the contrary, the trend are that they change its focus stop another precious liquid, ' ' oil potvel' ' , the water.
The microregion of Irece, located in the central region of the state of the Bahia, in the domain of the hidrogrficas basins of the rivers Green and Alligator, tributaries of the right edge of the river San Francisco, is known as an important agricultural region northeast Brazilian, with prominence for the cultures of beans, carrot, beetroot and onion. Due to ample availability of fertile ground and underground water it had a great increase of the areas irrigated in last the 20 years in the region, passing of 900 Ha. It agrees to remember that in the year of 1993 for about 5.900 Ha.