Although this conclusion may be considered a bit far-fetched, the majority of scientists agree that life is only possible on the planets with liquid water; as a result, any astronomical body that has even a possibility essay about water having liquid water on its surface is studied with utmost attention, for it is considered a potential home for extraterrestrial life. This involves precipitation, snowfall, drainage in rivers, lakes and streams and its return to atmosphere by way of evaporation and transpiration. Thermal pollution has a special effect on water organisms. However, essay about water, there is a demand for oxygen by aerobic microbes to oxidize the organic materials of biochemical oxygen wastes. Without water and its unique and unusual properties, life as we know it on earth would not exist. Physical impurities negatively impact the aquatic environment, essay about water, causing staining by water discolouration. Call Us:.
Long and Short Essay on Water in English
Water is the most important substance in the world, a necessity utilized by living things for survival but also necessary for several processes. Water is vital in our life due to the following reasons. It is essential for our survival. Experts estimate essay about water on average a human body requires about 48 ounces of water to survive. The body utilizes water in to facilitate essay about water functions such as: elimination of toxins from all body parts to the kidneys and quenching of thirst thereby eliminating dehydration that can weaken the performance of the body and its essay about water. It also facilitates digestion of food and absorption of nutrients through their dissolving in water, transports nutrients, chemicals and heat throughout the body.
Water is our primary source of food. It does so by facilitating the growth of plants thus, the formation of food. Plants make their food by the essay about water of photosynthesis. Here, starch is formed using water derived from the soil by air combining with sunlight. After this, the plant germinates in the presence of water and begins to grow and water supplies nutrients and materials to these plants, essay about water. Water also facilitates the swelling, production of energy and loss of heat of a plant throughout its cycle, until it matures and is harvested as food. Additionally, water provides food through its numerous sources by being a home to fishes and aquatic life that are considered food.
Water facilitates the continuance of life through reproduction. Water facilitates this movement, and once fertilization occurs, essay about water, the woman becomes pregnant. The developing offspring requires many nutrients to enable it to develop well, and it receives them essay about water water referred to as amniotic fluid. During delivery, the first substance to come out is water to facilitate delivery, and once birthed, they are nourished using milk that is rich in water. Water also enables transportation. Throughout the world, water acts as a useful connector of different continents and destinations. In instances, where land and air transports are not effective, water methods such as boats, ferries, essay about water, and ships transport among others container ships, oil, and people.
Water also facilitates the transportation of nutrients and fertile soils from the highlands to lowland areas where it is used for farming. Additionally, water transports nutrients and waste in plants from different cells and carries electric charges that promote comprehensible reasoning in humans. Water calms down the temperature. When the earth is at optimum temperatures, the presence of water in various water bodies facilitates the cooling of the surrounding. It does so by releasing some of its water through evaporation, consequently, cooling the temperatures. On the other hand, when the temperatures fall, water freezes and creates heat that warms the air. Moreover, water alleviates the heat produced by volcanoes or burning vegetation by creating moisture that goes to the sky and forms clouds that then condenses and drop essay about water as rain.
Also, water drops the temperatures during exercising. When a person engages in rigorous exercises, the body heats up and excrete perspiration that depletes about three percent of water in the body. Drinking essay about water water hydrates the body, normalizes the body temperature and eliminates fatigue. Buy Essay Pay For Essay Write My Essay Homework Writing Help Essay Editing Service Thesis Writing Help Write My College Essay Do My Essay Term Paper Writing Service Coursework Writing Service Write My Research Paper Assignment Writing Help Essay Writing Help. Login Order now. Call Now! Order now, essay about water.
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Here we come to the main point of this essay on water: we should be very careful about what we do with our sources of water. Do you want to get a custom essay on water written for you from scratch by real masters of their craft? Place an order now, and a professional writer will compose a state-of-the-art original essay in just 3 hours or less! If you would like to get a great custom written essay, order it from us today. It is that easy! Life and Importance of Water Essay Water is often considered to be one of the most important resources our planet has, and rightly so. Order Your Own Unique Essay!
This essay intro has been used by many students, but we can write you a perfect new one! Order Here! Статья Essay about Water была изменена: July 12th, автором admin. Got stuck with another paper? We can help! Rain water pours and collects on earth in the form of surface water as well as ground water. Here is a brief look at both these sources of water:. Our planet is rich in water with around three-fourth of its surface being covered with water. However, only a small part just about 2. Around It is salty and cannot be used for the purpose of irrigation or any other agricultural use.
It is not even good for industrial or domestic use. Out of the 2. This water is crucial for the growth and survival of all forms of terrestrial and freshwater aquatic beings. It is thus important to use it wisely. This point is emphasized time and again. However, its criticality is not yet recognized by the people. It is essential to understand the importance of saving water else we will have to learn it the hard way. Many areas around the world get sufficient water supply. However, several others, especially those that are a part of the developing countries, face water deficit. The government of such countries must ensure proper supply of water to various areas and the people must use water wisely and avoid any kind of wastage to ensure the flow. Water chemical formula H 2 O is a transparent chemical substance.
It is one of the basic necessities for every living being be it plants or animals. Just as air, sunlight and food, water is needed for the proper growth and development of life on earth. Besides quenching our thirst, water is used for numerous other activities such as cleaning, washing and cooking to name a few. It is the polarity of water by way of which it is attracted to other water molecules. The hydrogen bonds present in water hold the water molecules together. This substance bonds with any molecule it can form hydrogen bonds with. The hydrogen bonds of water turn into ice when cooled down.
The hydrogen bonds are stable and maintain their crystal like shape. The solid form of water which is ice is comparatively less dense as its hydrogen bonds are spaced out. Water has high level of polarity. It is known to be a polar molecule. It is attracted to other polar molecules and ions. It can make hydrogen bonds and is thus a powerful solvent. Water can moderate temperature owing to its high specific heat. It takes a long time when it comes to heating up. It holds its temperature for long when heat is not applied. This is another property of water that renders it the ability to moderate temperature.
As the water evaporates off a surface it leaves a cooling effect on the same. Water is required for most of the activities we indulge in our day-to-day life. It is necessary for us to conserve it else our planet will be devoid of fresh water in the years to come. Here are a few ways in which water can be conserved:. We must not waste water and contribute our bit towards its conservation. We must practice and promote activities and plans that help in conserving water and protecting its sources to meet the current and future demands of living beings. Water is the most common liquid found on our planet. It is vital for the survival of every living being. The shape of the water molecule is determined in part by the chemical bonding that occurs. For a brief review of chemical bonding see appendix B.
The water molecule consists of the elements hydrogen and oxygen. The chemical bonds in the water molecule are covalent bonds since the hydrogen atoms combine with the oxygen atoms in shared electron pairs. The oxygen atoms exerts a relatively strong pull on the shared electron pairs which causes the hydrogen atom to become electropositive regions and the oxygen atoms to become an electronegative region. The water molecule is considered a polar molecule because the positive and negative regions are not evenly distributed around a center point. The water molecule due to its polar nature is electrostatically attracted to other water molecules as well as other ions in solution.
The attraction of the electropositive hydrogen atom to the electronegative oxygen atom of an adjacent water molecule is the bridging phenomenon known as hydrogen bonding and is only about 10 percent the strengths of a covalent bond. Let us look more closely at the bonding patterns of water. When oxygen and hydrogen atoms are brought together the difference in their electronegativities is not sufficient to yield ions. Instead they must share a pair of electrons between them forming a covalent bond. This results in a concentration of negative charges nearer the oxygen atom and thus further from the positively charges protons that make the nuclei of the hydrogen atoms. The bond formed is intermediate between a fully ionic bond and a purely covalent bond.
There is a separation of charges but not complete as in the formation of ions. The partial charge that is produced is symbolized by d. In Water, one side of the molecule, where the hydrogen atoms are, will be partially positively charged. The other side with the unshared pairs of electrons will be negatively charged. As a whole the molecule is polar. So it can be said that the water molecule has a polar covalent bond. The polarity of the water molecule makes mutual attraction between water molecules possible. This means that each water molecule attracts four other water molecules to it. The hydrogen atom is attracted to the oxygen atom of the adjacent water molecule.
Each oxygen atom can associate with two hydrogen atoms of other nearby water molecule through its unshared pair of electrons. The force of attraction between these polar molecules is not as strong as a covalent or ionic bond but strong enough to be significant. It is important enough to be called the HYDROGEN BOND. It is the hydrogen bonding that occurs between water molecules that accounts for many of the remarkable and vital properties of water that make the presence of water synonymous with life itself. Firstly, the ability of water to remain liquid over a large portion of the range of temperatures found on earth is one such vital property. Other molecules, as small as water eg CO2 , change from liquid to gas at temperatures far below that of water. It is also the Hydrogen bond which is responsible for the large amount of heat energy needed to convert water from liquid to gas.
Water is therefore a great stabilizer of temperature which is essential to the survival of life on this planet. It accounts for more moderate temperatures near large bodies of water. This property is also exploited by many living organisms. Sweat, and its evaporation is a vital cooling process for biological mammals and depend greatly on the large amount of heat energy required to break the hydrogen bonds between water molecules. Hydrogen bonding maintains the integrity of the water molecule during chemical reactions. Other compounds undergo chemical changes ionization , where as water will maintain its chemical integrity.
As a result water is a poor conductor of electrical current. In conclusion, three main unique features which are the consequences of hydrogen bonding in water are: melting point, surface tension, density. These and other unique properties of water are responsible for the important role that water plays in life. Water is the single most abundant molecule in living things. It provides the medium in which most biochemical interactions occur. Some biochemical reactions water is involved in are: cellular respiration, digestion, and photosynthesis. Water is the home for many animals, plants and micro-organisms. Water is involved in the cycling of all other material by living things both on a local and global scale. Water has a number of unique and unusual properties that are responsible for its important roles it plays in the biosphere.
BOILING AND MELTING POINTS. Water has unusually high boiling and freezing points compared to other compounds with similar molecular structure. A comparison of boiling and freezing points can be seen in the following chart. Notice only water has a boiling and melting point that exists within the range of life. The boiling point of water is a unique oC results is and the freezing point is a remarkable 0oC due to the fact of the polar nature of the water molecule and hydrogen bonding. Two important, but not unique, properties of water for life are that water is liquid at normal temperatures over much of the earth and that water is transparent. If water were not liquid, nutrients could not flow from soil to the roots of plants, blood could not circulate, and bodies of organisms would be so rigid that they could not move.
If water were not transparent, light could not penetrate through cellular protoplasm into chloroplasts to drive photosynthesis in plants, you would be blind because light could not penetrate through the vitreous humor to the retina of your eyes, and light could not penetrate into lakes to allow growth of phytoplankton.
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