Dog Health

Abscesses An abscess is a localized collection of pus and may occur in any part of the body as a result of infection by a pus-producing organism. It usually results from a penetrating wound such as those caused by the teeth of another dog or by a foreign body such as a stick, thorn or…
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Monocotyledon Facts

Monocotyledons are one of the two basic classes of flowering plant. The other is dicotyledons. Monocotyledons are plants that sprout a single leaf from their seeds. Monocotyledons are also known as monocots or Liliopsida. There are approximately 50,000 species of monocots – about a quarter of all flowering plants. Monocots include grasses, cereals, bamboos, date…
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Peritonsillar Abscess

What is Periltonsillar Abscess? This is often a prolongation of tonsillitis. This means that a marked degree of infection occurs, so that an abscess develops between the tonsil itself and the side wall of the pharynx. Because most sore throats are promptly treated these days periltonsillar abscesses are now rarely seen. Peritonsillar Abscess Symptoms It…
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Synthetic Material Facts

Synthetic materials are materials created by humans, such as plastics. Many synthetic materials are polymers. These are substances with chains of organic molecules made up from identical smaller molecules, monomers. Some polymers are natural, such as the plant fiber cellulose. The first synthetic polymer was Parkesine, invented by Alexander Parkes in 1862. The first successful…
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Facts About Air Pressure

Although air is light, there is so much of it that air can exert huge pressure at ground level. Air pressure is the constant bombardment of billions of air molecules as they zoom about. Air pushes in all directions at ground level with a force of over 1 kg per sq cm – that is…
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Electromagnetic Wave Facts

The electromagnetic spectrum is the complete range of radiation sent out by electrons. It is given off in tiny packages of energy called photons, which can be either particles or waves. Electromagnetic waves vary in length and frequency. The shorter the wave, the higher its frequency (and also its energy). The longest waves are over…
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Posture During Pregnancy

The way you use the different parts of your body to move, as well as to hold, and carry things, is called body mechanics. Having proper body mechanics is important during pregnancy to help minimize discomforts as your body gets larger. The first step in achieving proper body mechanics is maintaining good posture. Good posture…
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Motion Facts

Every movement in the Universe is governed by physical laws devised by people such as Newton and Einstein. Newton’s first law of motion says an object accelerates, slows down or changes direction only when a force is applied. Newton’s second law of motion says that the acceleration depends on how heavy the object is, and…
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Iceberg Facts

Icebergs are big lumps of floating ice that calve, or break off, from the end of glaciers or polar ice caps. This often occurs when tides and waves move the ice up and down. Calving of icebergs occurs mostly during the summer when the warm conditions partially melt the ice. Around 15,000 icebergs a year…
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Vocal Cord Facts

Speaking and singing depend on the larynx (voice-box) in your neck. The larynx has bands of stretchy fibrous tissue called the vocal cords, which vibrate (shake) as you breathe air out over them. When you are silent, the vocal cords are relaxed and apart, and air passes freely. When you speak or sing, the vocal…
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Electromagnetism Facts

Electromagnetism is the combined effect of electricity and magnetism. Every electric current creates its own magnetic field. Maxwell’s screw rule says that the magnetic field runs the same way a screw turns if you screw it in the direction of the electric current. An electromagnet is a strong magnet that is only magnetic when an…
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Palm Sunday Children’s Story

Matthew 21:1-7; Mark 11:1-7; Luke 19:29-35; John12:12-16 The morning had dawned clear and bright and Jesus told His disciples. “Today we will enter Jerusalem.” As He led them toward the city gates, an amazing thing happened. The crowd around Jesus became bigger and bigger! Hundreds and thousands of people poured out of the city to…
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Planting Olives

The feathery gray-green foliage and the gnarled and furrowed trunks of the Olive (Olea europa) make them a valued ornamental. The Olive is one of the hardiest of evergreen fruit trees, being able to withstand 12-15° F. with little or no damage. The tree grows vigorously in a wide range of climates, but is best…
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Pneumothorax

What is Pneumothorax? This means that air has managed to seep into the pleural space, and as a result the lung is not expanding normally with breathing. It is not common with children, although it sometimes occurs with newborn babies. In this case it is a surgical emergency usually dealt with on the spot by…
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Steam Train Facts

Steam trains get their power by burning coal in a firebox. This heats up water in a boiler, making steam. The steam drives a piston to and fro and the piston turns the wheels via connecting rods and cranks. It takes about three hours for the crew to get up enough steam to get a…
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Jealousy

This may be a problem, especially when number one in the family circle is suddenly confronted with a rival in the form of number two, who may usurp his or her position. Jealousy is a major obstacle, and can lead to a great amount of jealousy within the mind of the displaced person. Jealousy, of…
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Leptospirosis

What is Leptospirosis? Spirochaetes is a member of the Leptospira and is responsible for a zoonotic bacterial disease called Leptospirosis. The term ‘zoonosis’ refers to any infectious disease that can be transmitted from both wild and domestic animals to humans; it is sometimes transferred via a vector or small organism. When humans pass on bacterial…
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Lymphadeopathy

The lymph glands of the body represent an important site for the production of protective cells aimed at overcoming systemic infections. However, during infections it is common for a few or many lymph glands to become involved, swollen and tender. This is due to their overproducing their normal products, or else to being involved in…
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Animal Migration Facts

Migration is when animals move from one place to another to avoid the cold or to find food and water. Some migrations are daily, some are seasonal, and some are permanent. Starlings migrate every day from the country to their roosts in towns and cities. Many birds, whales seals and bats migrate closer to the…
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Planting Peach Trees

For more than 200 years the Peach was believed to have originated in Persia and the scientific name, Prunus persica, indicates a Persian origin. However, in tracking down historical references to the Peach, scientists found that at about 1500 B.C. it was unknown in Persia and western India although it is mentioned in Chinese literature…
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