The increasing population of the world has led to great issues dealing with demand and supply. This in turn leads to advancements in various scientific and cultural techniques to use the limited available resources in an effective way. The alarming issue in the recent days like urbanization, scarce area for agriculture, limited availability of resources and food security has led to development of genetically modified organisms (GMOs) to resist against pest and weeds. Among various issues coming...
This report investigates various sustainable energy sources in order to establish which source would be most reliable to meet the electricity demand of South Africa. Hydro-energy, wind energy, ocean current energy and solar energy were studied. Although an infrastructure already exist, for wind energy the report concludes that solar energy would be the most reliable renewable energy source. Modern societies across the globe are dependent on the availability of reliable electricity supply for...
Environment is the surrounding that we live in. All living and non living things such as land, air, water, animals, plants and other things which surrounds us every day is environment. For millions of years humans are dependent on environment but people fail to conserve the environment. Environment of Bhutan is a very precious for every Bhutanese. Environment has proved itself to be a wealth of our country in many ways. But with time passing by environment were exploited and people are less...
Introduction Natural resources are those things that exist naturally within the environment and subsist relatively undisturbed in a normal and natural form. The world is blessed with diverse natural resources wealth that has helped mankind meet their daily needs for food, shelter, clothing, medicine and other important chemical elements that are vital for making useful products. Uplifting the life standards of human beings depend wholly on the wise use of the available natural resources (Phil,...
The substance with chemical formula of H2O is known as Water. Two hydrogen and one oxygen atoms are linked by covalent bonding. At room conditions it is liquid  and also exists in solid and gaseous state depending upon conditions. Near hydrophilic surfaces, it also exists in liquid crystal state.[1][2] About 71% of Earth surface is water ,[3] and is very important to all of existing life.[4] On Earth, oceans contain 96.5% water, groundwater 1.7% ice caps of Greenland,...
Deforestation and forest degradation account for about 12% of global anthropogenic carbon di-oxide emissions annually (van der Werf et al 2009). Forest cover depletion coupled with sub-optimal level of forest stocking efforts has its negative effects on economic, environmental and social fronts. Biodiversity and "livelihoods of at least a billion people and their cultural heritage" are at stake due to depleting forest cover (United Nations 2008a: 2). Sustainable Forest Management...
Concept of electromagnetic induction was actually discovered simultaneously in 1831 by Faraday in London and Joseph Henry, an American scientist working in New York that same year. Faraday's law describes electromagnetic induction, whereby an electric field is induced, or generated by a changing magnetic field.. but Faraday is credited for the law since he published his work first An emf can be induced in many ways-for instance, by moving a closed loop of wire into a region where a magnetic...
Sagar Island, situated in the east coast of India and one of the biggest deltaic Islands in Sundarban group. This Island is unique with its natural ecosystem and has a potential for becoming a prime eco-tourism destination. The natural and man-made problems affect the quality of environment and life of people in Sagar Island. This paper examines the severe coastal issues of Sagar Island that include coastal erosion, threat to biodiversity, natural hazards, tourism and livelihood insecurity of...
Coming from a rural area and seeing the impacts of what these current patterns of housing are having on the environment illustrates that these "current patterns of housing in the Irish countryside are unsustainable and need to be curbed". Irish housing patterns have changed in recent years in my opinion and this is having a negative effect on the countryside. According to the National Spatial Strategy (2002-2020) there is currently 42% of Ireland's population living in rural areas....
In physics, buoyancy (pronounced /ˈbɔɪ.ənsi/) is an upward acting force, caused by fluid pressure, that keeps things afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a "downward" direction. In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. This force enables the object to float. with the...