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Why we remain healthy & fit??
Everyone of us is facing several disease & body disorders.May be some are quite fit & healthy.The point is that why the remai n healthy & fit.I will explain some reasons why they remain healthful. 1.Most of us don't get up early in the morning.It is saying by wise men; Early to bed and early to rise makes a m an healthy,wealthy and wise. Many people claims that they were sleeping till midnight.This is not for healthy life.Late night sleeping habit will sick you. 2.Due to late awaken,most of us do not take exercise & morning walk.This is also causes idle life.Without morning walk,man feels stress & uncomfortable. 3.Mostly rich people use cooked & fast foods.Actually,they want to show that they are eating the best things.But they not know that these cooked & oily things will sick & ill them.Thus,if we want to live a healthful & happy life,we must use simple...
Introduction of Elements
Elements: In the early ages,only nine elements (carbon,gold,silver,tin,mercury,lead ,copper,iron and sulphur) were known. At that time it was considered that elements were the substance that could not br broken down into simple units by ordianary chemical processes.Until the end of nineteenth century sixty three elements had been discovered.Now 118 elements have been discovered,out of which 92 are naturally occuring elements.Modern defination of elements is : It is a substance made up of some type of atoms,having same atomic number and cannot be decomposed into simple substances by ordinary chemical means. It means that each element is made uo of unique type of atoms that have very specific properties. Elememts occur in nature in free or combined form.All the natually occuring elements found in the world have different percentage in the earth's crust,oceans and atomsphere. Elements may be soilds,liquid and gases.Majority of the elements exist as soilds e.g. sodium,copper,zin...
Population Growth and world Food Supplies.
The alarming and incessant growth of population is causing a serious ecomic problemsin almost all continents.Great pressure is being placed on arable land,water,energy and biological resources. As the world population being grow,the food problem will become increasingly severe. The most vulnerable will be population in developing countries.The pe capita availablitity of food grains has been declining for the past 25 years.Certainly with a quarter milion people being added to the world population each day,the need for grains and all other food will reach unprorcedented levels. Below,world popoulation and its growth trend are given. 10,000 years ago,10 million people By 1850, population was 1 billion. 80 more years to reach 2 billion in 1930 45 years, it double again (4 billion in 1975) 12 years to reach 5 billion in (1987) 6 billion in 1999 By the year 2020,there will be 8 billion. The population of the world is increasing with repaid speed.We should control it because our fu...
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