The newly split and hot globe was cooled and formed to be arable and be inhabitable with water. Water was poured to cool the newly shaped earth, then seeds grew to initiate the cycle of life.
It revealed that from water living thing derived. Water is the main component of living things. And in fact, the Qur’an stated “,..We made from water every living thing…” Water as a substance of having a high flexible characters, solid, gas and liquid performs very vital function in this globe. In its liquid form the H2O has almost unlimited roles.
Jatiluhur is dam accumulating and controlling Citarum river water. Citarum the longest and widest river in West Java. It is vital for West Java and the Special Region of Capital City of Jakarta. It serves as water reservoir of 3 billion m3. It supplies household water for Northern West Java and Jakarta regions, and irrigates 242,000 ha and generates electricity of 187.5 MW
The Nile water is traditionally controlled by Egypt. Egypt must not be just dependent on the Nile water for fulfilling national water need because up-stream countries are claiming the water. Egypt has potential to develop woods and forest region with managing the present Nile water available. The existence of perennial plants growing in Cairo city indicates that Egyptian land is arable for vegetation. The statement of the head of geology laboratory of Cairo University that Egyptian land was greener than Indonesian in the last time is rational and Egypt some time in the future can be greener than Indonesia again. Key words: flexible, globe, greener, liquid, living, Nile, science, water.
It is indicated that water commences its vital role in creation of all the living things both as medium and as component of it. After being created, living thing have to maintain their life, they need energy and food to survive. Where do the energy and food derive? No doubt they come from water. Seeds will stand to be dormant and will not germinate in the absent of water.
Vegetation will grow best in humid soil and enough relative humidity of atmosphere. Food chains are commenced from vegetation. Food crops supply human with grains and cereals, and tuber and fruits, and vegetables. A person can survive without food for more than a month, but can live for only a few days without water.
All living things need water to survive. The human body needs two liters of water a day. The average human body is composed of about 55% water. Most of our food is water; tomatoes 95%, spinach 91%, milk 90%, apple 85%, potatoes 80%, and beef 61% (Geocities. Com, 2009). Subandi (2011) wrote human can survive for a few days without water, but only a few minutes can survive without oxygen (4 minutes). It needs an amount of cost to have a meal, and needs relatively smaller amount of cost for water in many parts of world, but it is free to get oxygen in this globe. Logically, human has to keep the nature, maintain environment, and eventually thanks to the God, the Almighty, the Creator of the nature.
The largest accounting for 97% water is in the collection of oceans. The second largest quantity as much as 2 % is water stored in solid form in the ice caps and glaciers. And the rest, in small quantity, water contained within all living organisms. The distribution of the earth’s water are as groundwater 0.68%, in lakes 0.01%, as soil moisture 0.005%, as gas in atmosphere 0.001%, in streams and rivers 0.0001%, and contained in the bodies of living organisms (animals’ body including human body and vegetation) 0.00004%
Generally, water cycle or hydrologic cycle is described as the continuous movement of water on and below the surface of the earth. Substanse of water can change among the state of liquid, vapour and solid. Vapour is gas form, while solid is in the form of ice. Sun energy drives water to evaporate as vapour into the air. Wind blows vapour into the air high up to the sky. The vapour rises into the upper part of atmosphere where cooler temperatures cause it to condense into clouds. When the clouds reach position high enough where it precipitates into drops of water (precipitation) and fall off the sky as rainfall.
The detrimental of green house effect is relieved by the existence of water vapour that cools the air temperature. Without the cooling effect of evaporation, the greenhouse effect would lead to a much higher temperature of 67 0 C (Map.gsfc.nasa.gov. 2010) If this happens, only the thermophylic (withstand living in high temperature condition) organism can withstand the heat and human must stay all day long in an air conditioned room. Rainfall is partly absorbed by land and a portion of rain water soaks into the ground as infiltration water or gravitational water. Water infiltrates deep to the saturated subsurface rock forming subterranean water surface. The massive rock acts as container for storing huge valume of freshwater. Water also fills the so called micropores and macropores of soil particles. In dry condition these pores are filled with air or gas, but when rainwater comes, water replaces the air. Pores for some times function as water container to supply the roots
Water stores in soil particles and in subsurface rock may seep back into stream or opening in the land surface and emerges as freshwater springs or ground water discharge. In the region where the land is covered with dense vegetation, its roots system can increase the infiltration and the water holding capacity. Discharging water from this region continuous flowing over time even till the end of dry season, allowing the streams and rivers ever flowing its water all year round supplying for human use and maintaining the life of organisms
The property of water as a solvent is able to dissolve other substances. Were it not for the solvent property of water, life could not exist because water transfers nutrients vital in animal and plants and also in human body. There are many therapeutic measures recommended to drink water, plain water.
Water comes down from the sky as a gift for all the creatures on earth in the form of rainfall. Man made dam as a storehouse for water on earth is established to store and to control the supply of water throughout the year both in rainy season and dry season in tropical region.
Jatiluhur dam up to now is the biggest dam in West Java Province. And a bigger dam is under construction in eastern West Java province, the Jati Gede dam. Jatiluhur dam supplies water to agricultural region of northern West Java, and household water of Jakarta region, and electricity for Java and Madura Islands, and control the seasonal flood used to happened in agricultural region of northern West Java.
Several countries in Africa are concerned with Nile water. Egypt must not be dependent on only the Nile water for its needs (agricultural and living activities). Egypt has potential to develop forest region with managing the present Nile water available. The existence of perennial plants growing in Cairo city indicates that Egyptian land is arable for vegetation. The statement of the head of geology laboratory of Cairo University that Egyptian land was greener than Indonesian in the last time is rational and it can be regained.
0 komentar:
Post a Comment