Monday, November 27, 2006

Structure

With a little exception, most remarkably the sponges, animals have bodies differen­tiated into split tissues. These comprise muscles, which are talented to contract and control locomotion, and a nervous system, which sends and processes signals. There is also naturally an internal digestive chamber, with one or two openings. Animals with this sort of association are called metazoans when the former is used for animals in common.

All animals have eukaryotic cells, enclosed by a characteristic extra cellular matrix collected of collagen and stretchy. This may be calcified to form structures like shells, bones, and spackles. Throughout development it forms a comparatively flexible framework upon which cells can move about and be rationalized, making complex structures possible. In contrast, other organisms like plants and fungi have cells detained in place by cell walls, and so expand by progressive growth. Also, unique to animal cells are the next intercellular junctions: tight junctions, gap junctions.

Thursday, November 23, 2006

Lexicography

In American English usage, the name can be capitalized or spelled in lowercase interchangeably, either when used completely or prefixed with "the" Many consciously spell the name of the planet with a capital, both as "Earth" or "the Earth". This is to distinguish it as a good noun, distinct from the senses of the term as a count noun or verb. Oxford Spelling recognizes the lowercase form as the most common, with the capitalized form as an alternative of it. Another convention that is very ordinary is to spell the name with a capital when occurring absolutely and lowercase when preceded by "the". The term almost completely exists in lowercase when appearing in common phrases, even without "the" preceding it.

Terms that refer to the Earth can use the Latin origin terr-, as in terraform and terrestrial. Another Latin root is tellur-, which is used in language such as tellurian and tellurium. Such terms derive from Latin terra and tellus, which refer variously to the world, the element earth, the earth goddess and so forth. Scientific terms such as geography, geocentric and geothermal use the Greek prefix geo, from (again meaning "earth"). In many skill fiction books and video games, Earth is referred to as Terra or Gaia. Astronauts refer to the Earth as "Terra Firma".

Monday, November 20, 2006

Leather from animals

Today, most leather is prepared of cow hides, but many exceptions exist. Lamb and deer skin are used for soft leather in more costly apparels. Kangaroo leather is used to create items which need to be strong but supple, such as motorcycle gloves. Kangaroo leather is preferential by motorcyclists specifically because of its lighter weight and superior scratch conflict as compared to cowhide. Leather made from more striking skins has at different times in history been considered very beautiful. For this reason certain snakes and crocodiles have been sought to near extinction.
In the 1970s, farming of ostriches for their feathers became trendy. As a side product, ostrich leather became accessible. There are different processes to produce special finishes for many applications i.e. upholstery, footwear, automotive, accessories and clothing. Ostrich leather is measured to be of the finest and strongest in the world and at present used by all the big fashion houses like Herm├Ęs, Prada, Gucci, and Louis Vuitton. Ostrich leather has an attribute "goose bump" look because of the large follicles from which the feathers grew.

Wednesday, November 15, 2006

Hanging Gardens of Babylon

The Hanging Gardens of Babylon and the walls of Babylon were considered one of the Seven Wonders of the World. They were both evidently built by Nebuchadnezzar II around 600 BC. The green Hanging Gardens are extensively documented by Greek historians such as Strabo and Diodorus Siculus, but otherwise there is little evidence for their existence. In fact, there are no Babylonian records of any such gardens having existed. Some incidental evidence gathered at the excavation of the palace at Babylon has accrued, but does not completely substantiate what look like fantastic descriptions. Through the ages, the location may have been confused with gardens that existed at Nineveh, since tablets from there clearly show gardens. Writings on these tablets describe the possible use of something similar to an Archimedes' screw as a process of raising the water to the required height.

The Hanging Gardens probably did not really "hang" in the sense of being balanced from cables or ropes. The name comes from an inexact conversion of the Greekord kremastos or the Latin word pensilis, which means not just "hanging” but "overhanging," as in the case of a terrace or balcony.

Thursday, November 09, 2006

Agriculture - Overview

Farming refers to a wide range agricultural production work, covering a large variety of operation scales practices, and commercial inclination. At one end of this spectrum, the subsistence farmer farms a small area with limited resource inputs, and produces only enough food to meet the needs of his/her family. At the other end of the field is commercial intensive agriculture, including manufacturing agriculture.
Such farming involves large fields and/or numbers of animals, large reserve inputs and a high level of mechanization. These operations generally attempt to maximize financial income from produce or livestock. Modern agriculture extends well ahead of the traditional production of food for humans and animal feeds. additional agricultural production goods include cut flowers, decorative and nursery plants, timber, fertilizers, animal hides, leather, industrial chemicals fibers fuels and both legal and illegal drugs.

Monday, November 06, 2006

Tasmanian devil

Tasmanian devil is a carnivorous marsupial found exclusively on the island of Tasmania. The size of a small dog but stocky and muscular, the Tasmanian devil is characterized by its black fur with white patches. It has a loud and disturbing screech-like growl, possesses a vicious temperament and is predominantly a scavenger. The widespread and common throughout Tasmania until recently.
Like a lot of the wildlife, fast vehicles on the roads are a problem for Tasmanian Devils, which are often killed while feeding on other road-killed animals such as wallabies. Tasmanian devil population has been reduced by up to 80% in parts of Tasmania, which is gradually spreading throughout the island. It is believed the majority have starved when the tumors have spread to their mouths and that the tumors are spread by fighting between devils over carcasses they feed on – typically, fighting devils will bite one another's faces. There is no cure for the disease, and intensive research is underway to determine its cause. There is also a captive breeding program being undertaken by the Tasmanian government to establish a disease-free, population of Tasmanian Devils outside Tasmania.

Thursday, November 02, 2006

India and china

The Classical Indian and Classical China civilizations each created their own diverse idea of what and how things would run in their civilization. So India and China had some similarities and differed in many ways from their religious beliefs, to their political history, to their political institutions, and many more. By these classical civilizations could especially be compared in their social systems and their arts and sciences.

There are many more aspects in which these two civilizations differ. Classical China had a social system where social status could only be passed from one generation to the next through inheritance. However, there were possibilities where one could move up from their social status. And there was the rare and occasional talented peasant that was offered an education and could sometimes better themselves to the upper class. The Reincarnation was also a chance to come back as something better if you led a good life. But this was not the case in India. And the social structure in India was far more rigid and there was no chance of moving up in the social ladder. Each set of civilization had three classes and one group of low people that had no skills.