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Structure of matter a. Evidence of the Prticulate Nature of Matter The idea that matter is made up of minute particles called atoms dates back to the ancient Greeks. According to the Greek philosopher Democritus, a given piece of substance, say a piece of yam, can be cut into smaller and smaller bits, until eventually […]
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The benefits of the internet are as follows: INFORMATION: The internet gives you access to information on any subjects of your interest. This makes the internet a valuable research tool. Most sources such as news paper and magazines have websites and a number of them only exist online. RESEARCH: You can make use of the
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Definition of Authority Authority is the legitimate or socially approved use of power. It is the legitimate power which one person or a group holds over another. The element of legitimacy is vital to the notion of authority and is the main means by which authority is distinguished from the more general concept of power.
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Introduction Sexually transmitted infections (STIs) are infections that are spread primarily through person-to-person sexual contact. There are more than 30 different sexually transmissible bacteria, viruses and parasites. The most common conditions they cause are gonorrhoea, chlamydial infection, syphilis, trichomoniasis, chancroid, genital herpes, genital warts, human immunodeficiency virus (HIV) infection and hepatitis B infection. Several, in
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Calculation of Mean, Median and Mode of Ungrouped Data Mean, median, and mode are three basic ways to look at the value of a set of numbers. You will start by learning about the mean. The mean, often called the average, of a numerical set of data, is simply the sum of the data values divided
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Introduction to Organic Chemistry – Hydrocarbons Organic chemistry originally meant the chemistry of compounds obtainable from plants and animals – living organisms. Organic chemistry is that branch of chemistry that deals with the structure, properties, and reactions of compounds that contain carbon. In other word, organic chemistry is defined as the chemistry of carbon compounds.
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Introduction There are no special respiratory organs in unicellular and aquatic organisms such as Amoeba and Paramecium. Oxygen that dissolves in water diffuses into the body while carbon dioxide goes out of the body through the entire body surface. The cell membrane acts as the respiratory surface. The concentration of oxygen in water is higher
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Definition of Environmental Physiology This can be defined as effects of the environment on the growth and performance of farm animals. Normal growth and performance are enhanced when climatic factors like temperature, rainfall, wind, relative humidity, sunlight etc. are moderate. Effects of Changes in Climate on Growth High intensity of radiation affect food intake of
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Introduction The term solubility refers to the maximum amount of material that will dissolve in a given amount of solvent at a given temperature to produce a stable solution. Saturated and Unsaturated Solution A saturated solution of a solute at a particular temperature is one which contains as much solute as it can dissolve at
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Programme A program is a set of instructions given to a computer to perform a specific task. A computer program is a list of instructions that tell a computer what to do. Everything a computer does is done by using a computer program. Some examples of computer programs: A web browser like Mozilla Firefox and Apple Safari can be used
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