The test of a person’s survival can arise out of natural calamities like an earthquake, tsunamis, hurricane, volcanoes, avalanches or flood. How the person comes out of that situation depend upon how well he is prepared for the situation. Apart from the naturally occurring calamities there are situations where we know that we are bound [...]

As a biological need, it is very important for any person to dispose off the various human wastes at regular intervals of time. In addition, it is very important that the various human wastes are disposed off in the right manner to keep the surroundings clean and ensure a clean environment worth living. There are [...]