Lo que nos mantiene vivos
En esta pesentacion se muestra la anatomía del corazón (incluye su exterior, sus válvulas, sus paredes, sus columnas carnosas y el sistema coronario)
Entradas
Uses of fresh water
The use of fresh water can be divided into three main areas: Domestic, Industrial and Agricultural
Dams
Advantages: Stop valley floods Power generation Higher water supply More farmland Disadvantages: People are forced to move Destruction of the natural environment Soil becomes less fertile Farmers have to spend more on fertilizers Investigation about a dam in Argentina: Río Hondo Dam It was inaugurated in 1967 with the idea of prevent floodings and create energy. It is located in the boundary between Tucuman and Santiago del Estero, and the rivers come from the northwest. It rises over the 39 m, and its capacity covers 1745 hm³. It has problems with contamination because of sediments and since industries discard its waste in there. Done with Luna Rosenman