Though we have crossed the limit but still it is most necessary to maintain a balance between nature and humans activities and this requires individual efforts by every human at all fronts wherever his access is possible. We can make efforts to recover from it by controlling human activities like deforestation, making pollution, wastage of natural resources, nuclear tests, wars, and main of the mains is the population growth.
Water – the essential element for life
In our solar system, earth is the only planet where existence of life has become possible and the only possible reason is the presence of water on earth. In universe, if we go beyond our solar system, the possibility for existence of extra-terrestrials (Aliens) is only on those universal objects where there is water. In other words it can be said very certainly that water is the vital source of life. Though the water molecules exist on other planets too but there they form other matters there such as vapor and ice which is not sufficient for evolution of life.
What is Water?
Water is an essential element for all living beings on earth. This is the primary source of food for root leveled producers (plants) in all Food web on earth. In other words the flow of life within living species starts from water. The chemical formula of water is H2O. A water molecule contains one oxygen and two hydrogen atoms. Water covers around 71% of surface of earth.
Why does water found only on earth in Solar system?
Both the water forming atoms i.e. oxygen and hydrogen exist on other planets too but only earth is the planet, where they bond together to form water (H2O). There are a number of reasons for this:
Distribution of water on earth
The collective mass of water found on, under and over the earth surface is called the hydrosphere. Water is widely distributed on earth in following three different forms:
What is Water Cycle?
Water continuously flows within the components of hydrosphere in a cyclic form called Water cycle. This flow starts from oceans through evaporation of water to atmospheric air where it converts to condensed clouds. Then precipitation converts it to rain and water reaches to earth. The water flows back to oceans through rivers, streams and other water bodies in various forms like surface water, soil water and groundwater etc.
Water cycle is scientifically known as hydrologic cycle.
The physical components and some natural processes included to form a cyclic flow of water cycle described below sequentially:
Through these multiple ways a cyclic flow of water gets completed.
Factors affecting water cycle
Affects of Global Warming on earth:
Uses of water
Human life is completely dependent on water. His very first daily activity starts with pouring water over his face and sleeps with drinking water after dinner. Following are a few important areas where we require water:
Beside humans all living species need water to remain alive. All the producers like plants and consumers like birds and animals need water.
Mixing of chemical wastages and dirty elements to fresh water makes it dirty and non drinkable which can kill species living in and out of water. This is called water pollution.
There are many reasons for water pollution. Some of them are as below:
The polluted water running-off through rivers and canals reaches in the body of fishes and animals those drink it and also used by plant through photosynthesis. This water contaminates their body and subsequently reaches to human body too when these animal, fishes and plants taken as food and when human drink such water. Cholera and typhoid, vomiting, nervous breakdown and skin diseases are the common health problems that arise due to polluted water.
Wastage of water at homes
Wastage of water is the normal routine we follow in our daily life activities that can be controlled very easily if we put some consideration over it. Followings are some of our daily routines contributing to wastage of water:
Role of Kids
Kids can also contribute a lot to control wastage of water and preventing its pollution by following rules below in their life and also awaring others about them:
In this article we have explored very important natural element - 'Water' which the precious gift to us from our mother earth. But intentionally or unintentionally we all are contributing to wastage and pollution of this element. Man is consuming natural resources very fast for his personal benefits and disturbing the nature without thinking over its adverse affects that shall be borne by his future generation.
Let us make a pollution free environment through preserving our natural resources.
Ice-caps: Very large size of thick ice sheets spread over the pole areas.
Alien: Living species originated out of earth's atmosphere
Greenhouse effect: Sun rays entering earth's atmosphere are revert back as thermal radiations. This radiation is absorbed by atmospheric greenhouse gases, and spread within atmosphere to maintain atmospheric temperature.
Green house gases: Water vapor, carbon dioxide, methane, nitrous oxide, and ozone etc.
Global warming: Rise in temperature of green house gases on earth leads to increase in earth's atmospheric temperature also. This climatic change is affecting our ecological as well as biological systems very fast
Urban areas: An area like cities, towns etc. where large population density resides in comparison to areas surrounding it
Residence: Place where we live
Ecological problem: Scientific problems for living beings relating to natural environment where they live
Biological problem: Problem related to living species regarding their cells, molecules, organs, individuals or ecosystems etc.
Reforestation: Planting trees for increasing forests on earth
Deforestation: Cutting forests from earth
Industrial by-products: The Secondary product released after a chemical or manufacturing processes from industries
Soil erosion: Removal of soil with fast running water and wind, mainly due to uprooting of grass and trees on land