In this post I modified and prepared the Index page of IT workshop for Print layout
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IT WORK SHOP Index Page for Print
Friday, April 16, 2010
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IT Workshop Index Page
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Monday, April 5, 2010
Save Trees
Did you know that each one of us requires 625 square feet surface area of greenery to produce our daily oxygen needs? That's reason enough to know more about these wonderful creations of God and the fate Man has pushed them into by his greed and carelessness. Trees are the largest and longest living things on earth and they live much longer than animals. The Californian Giant Sequoia, for example, may live for more than 3000 years. And do you know how long it will take to cut this down? Just 3 hours. But it cannot be created again and we'll have to wait for another 3000 years to get back a tree of the same size and usefulness. So even planting of 3000 saplings cannot justify cutting down one single tree today.
Trees are silent and selfless servers that work non-stop 24 hours a day, 365 days a year, without a single second's break. They produce oxygen by a process called Photosynthesis whereby it absorbs harmful carbon dioxide and releases several thousands of rupees worth of life- giving oxygen free of cost. In fact all the oxygen in the air comes from only trees and other plants even if it is sold in "Oxygen Parlours"! The absorption of carbon dioxide that is a 'Green House' gas helps slow down Global Warming. If there is a steep depletion of forest cover, then the quantity of oxygen in the air is sure to go down. Not only as producers of oxygen are trees important in making the earth a more livable place: they act as very good sound barriers reducing noise pollution; and the green curtain reduces the force of wind, which otherwise will blow up so much dust and sand that we'll hardly be able to see who is next to us. Trees cool hot days and keep warm at nights.
The roots of trees, besides binding the soil together and preventing erosion, also hold moisture and conserve groundwater. They are good raw materials for many natural drugs. Leaves are used as green manure and their litter actually increases water infiltration into the soil thereby conserving groundwater. Flowers provide food for birds and insects and are used for making things like drugs, dyes, perfumes and so on. Trees ensure seasonal rains, reduce floods and house insects, birds and animals. Trees give us vegetables, fruits, nuts, firewood, furniture wood, coffee, cocoa, rubber, cotton, carpets, mattress, oil, soap, honey, candles, medicine, gum, match stick, paper, fossil fuels, brooms etc. In fact not a moment in our lives can pass without our having to depend on trees.
And what have we done to the trees in return?
We have destroyed almost 89% of the forest cover that the earth had in the 19th Century. The remaining 11% too is under serious threat of ruin. Here is a simple experiment to show how green cover helps prevent soil erosion.
Step 1: Take two trays with a one-inch opening on one of the sidewalls. Fill both with soil. Spread some lentil seeds on one and keep the other bare. Keep moist.
Step 2: After the lentils have sprouted and grown 3 or 4 inches in height, place the two trays on the edge of a table and keep two containers below the openings.
Step 3: Pour two glasses of water at the farthest end of both the trays. Observe the water flow across the tray and out of the opening into the containers below.
And Finally make our earth as "Green Earth"
