Constituents of sand

The most common constituent of sand, in inland continental settings and non-tropical coastal settings, is silica (silicon dioxide, or SiO2), typically in the form of quartz, which, because of its chemical inertness and considerable hardness, is resistant to weathering. The composition of sand varies according to local rock sources and conditions. The bright white sands originate in tropical and subtropical coastal settings are ground-up limestone. Arkose is a sand or sandstone with significant feldspar content which is derived from the weathering and erosion of a (usually nearby) granite. Some locations have sands that contain magnetite, chlorite, glauconite or gypsum. Sands rich in magnetite are dark to black in color, as are sands derivative from volcanic basalts. The chlorite-glauconite bearing sands are usually green in color, as are sands derived from basalts (lavas) with a high olivine content. The gypsum sand dunes of the White Sands National Monument in New Mexico are famous for their bright, white color. Sand deposits in some areas have garnets and other resistant minerals, with some small gemstones.
Acid rain

Acid rain occurs when sulphur dioxide and nitrogen oxides are emitted into the atmosphere, undergo chemical transformations and are absorbed by water droplets in clouds. The droplets then fall to earth as rain, snow, mist, dry dust, hail, or sleet. This can add to the acidity of the soil, and affect the element balance of lakes and streams.The term "acid rain" is sometimes used more usually to include all forms of acid deposition - both wet deposition, where acidic gases and particles are removed by rain or other precipitation, and dry deposition removal of gases and particles to the Earth's surface in the absence of precipitation. Acid rain is defined as any type of precipitation with a pH that is abnormally low. Dissolved carbon dioxide dissociates to form weak carbonic acid giving a pH of approximately 5.6 at typical atmospheric concentrations of CO2. Therefore a pH of less than 5.6 has every so often been used as a definition of acid rain. However, natural sources of acidity mean that in remote areas, rain has a pH which is between 4.5 and 5.6 with an average value of 5.0 and so rain with a pH of less than 5 is a more appropriate definition. The US EPA says, "Acid rain is a serious environmental problem that affects large parts of the US and Canada" Acid rain accelerates weathering in carbonate rocks and accelerates building weathering. It also contributes to acidification of rivers, streams, and forest damage at high elevations. When the acid builds up in rivers and streams it can kill fish.

Historiography has a number of associated meanings. It can refer to the history of historical learning, its methodology and practices (the history of history). It can also refer to a particular body of historical writing (for example, "medieval historiography during the 1960s" means "medieval history written during the 1960s"). Historiography can also be in use to mean historical theory or the study of past writing and memory. As a meta-level analysis of descriptions of the past, this third conception can relate to the first two in that the analysis usually focuses on the narratives, interpretations, worldview, use of evidence, or method of presentation of other historians.

Gardening is the art of growing plants with the aim of crafting a purposeful landscape. Residential gardening most often takes place in or about a residence, in a space referred to as the garden. Although a garden naturally is located on the land near a residence, it may also be located in a roof, in an entrance, on a balcony, in a windowbox, or on a yard.
Gardening also takes place in non-residential green areas, such as parks, public or semi-public gardens (botanical gardens or zoological gardens), pleasure and theme parks, along transportation corridors, and around tourist attractions and hotels. In these situations, a staff of gardeners or groundskeepers maintains the gardens.
Indoor gardening is concerned with the increasing of houseplants within a residence or building, in a conservatory, or in a greenhouse. Indoor gardens are sometimes included as part of air conditioning or heating systems.
Water gardening is concerned with growing plants adapted to pools and ponds. Bog gardens are also considered a type of water garden. These all require extraordinary conditions and considerations. A simple water garden may consist simply of a tub containing the water and plant(s).
Container gardening is concerned with growing plants in any type of container either indoors or outdoors. Common containers are pots, hanging baskets, and planters. Container gardening is usually used in atriums and on balconies, patios, and roof tops.

Every student entering business school to get their MBA degree will require various skills and have basic expertise in particular areas. The level of the mathematical skills will vary depending upon the choice of your program. Many MBA programs need algebra, statistics, and most likely calculus. You may want to revive your skills if they are in query before entering an MBA program, because joining an MBA program without basic skills will be a bit tougher to get through. Most business schools needs the use of private computers throughout your MBA program, in some cases many school will require that you possess your own laptop. Though the degree to which you use a computer will differ, you should be contented with the complete knowledge of word processing, spreadsheets and databases. Every school will provide you their minimum basic necessities for computer skills.
Business schools today try to impersonate the business setting in their academic programs by using student teams. As businesses more and more twisted to teams to work on projects and to solve troubles, MBA programs have converted a huge portion of course work from individual work to teamwork. Many masters of business administration programs now contain teambuilding training as team building workshops, or as a theme in managerial performance courses. Teams are formed mainly for the reason of one project in one course or by remaining together, working on multiple courses for months. In this competitive situation of Business administration programs, the collaboration of students in team building movements is often complicated. Students that take part in team activities find that working with someone else takes up a lot of educational time.
The business fundamentals are taught in every MBA program. Economics, finance, accounting, organizational behavior, marketing, and statistics are in the basic range for master of business administration programs. In business school these subjects are considered a foundation group of courses required for each and every candidate.
These core courses make up the first year of study in a two-year full-time program. In some programs, students who have a prior background in business can by pass some or all of the core courses on the basis of either a special examination or an evaluation of the undergraduate transcript. In some programs, students who have a previous backdrop in business can go around some or all of the foundation courses on the basis of either a special examination or an assessment of the undergraduate record.