Monday, 20 February 2012

Importance of Rain

Human factors -
There is no higher quality source of water available to us than rainwater. Unlike water captured in dams which requires an extensive treatment process to ensure a quality fit for human consumption, rainwater that is collected on roofs and stored appropriately represents a sustainable source of water ideal for use inside and outside the home. By using rainwater for toilet flushing, laundry and garden use alone, it can reduce mains water requirements of a typical household by 70%. If hot water systems are supplied with rain water, this reduction can be as high as 85%!

Rain water's most well-known and most important effect is providing you with water to drink. According to the United States Geological Survey, rain water seeps into the ground in a process called infiltration. Some of the water seeps deep beneath the top layers of soil where it fills up the space between subsurface rocks--it becomes ground water, also called the water table. Less than 2 percent of the earth's water is ground water, but it provides 30 percent of our fresh water. Without rain water's continued replenishment of the water table, potable water would become scarcer than it already is.
Areas that receive heavy rainfall can take advantage of the extra water by harvesting it. Using rainwater for showering, toilet flushing and crop irrigation conserves the public supply of purified potable water. According to the University of Oregon's Center for the Advancement of Sustainable Living, people all over the world harvest rainwater--but despite its practical applications, it's rare in the U.S. Building a catchment system with gutters, downspouts and a storage tank can reduce your dependence on traditional water sources and take advantage of a renewable natural resource

Agricultural factors-
Rain is very important to farms to make sure that the crops that are being grown receive the right amount of moisture so that the crops harvested are maximized. Plants use a tremendous amount of water. Rains, to a major extent, provide this water, through the soil, for the development and growth of plants. Rainfall is the first source of water. Irrigation can supplement rainfall to supply crop water needs.
Importance of water for plants:
Need for the physiological processes to complete plant life cycle i.e. seed to seed;
A primary component in photosynthesis and respiration;
Responsible for turgor pressure in cells (Like air in an inflated balloon, water is responsible for the fullness and firmness of plant tissue).
Maintains temperature of plant body;
Helps in the uptake of nutrients from soil;
A solvent for minerals and carbohydrates moving through the plant ;
Serves as a medium through which nutrients and other solutes move in the plants.
Thus, water from rainfall is vital for plant growth.
Less rain or breaks in monsoon rainfall results in moderate to sever moisture stress.
Such moisture stress affects
Root and shoot development
Pollination and fertilization
Grain filling
Crop yields.
Thus, water from rainfall is vital for plant growth

Living animals factors -
For animals rain water is also important .As water falls on the rivers ,seaside, on the hills etc which the animal can get water from. The rain also provides water to plants and grass which can grow for the animals to eat. For amphibians the rain falls in the lakes, ponds and sea to keep these habitats maintained.

Importance of rain -
Rain is associated with water. During the summer season from time to time we ask God for rain. We need rain not only because it is hot and rain usually refreshes us but also because we know that crops depends much on rain. The more crops we get the better for us and for economy of the country we live in and for other countries as well. Plants, tress, animals, birds, and insects - they all need rain. Rain is necessary for their life.

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