PCLinuxOS maintains its own software repository, available via the Advanced Packaging Tool (APT) and its Synaptic front-end, completely replacing Mandriva's urpmi. PCLinuxOS endeavors to maintain a fully valid upgrade path for version 1.0. This means that an installation could be continuously updated to the latest versions of packages, hence foregoing the need to re-install the entire distribution upon each successive release. In the test releases before 1.0, it has sometimes been necessary to perform a reinstallation.
Other differences include its own menu arrangement and custom graphics and icon sets.
PCLinuxOS places specific emphasis on desktop computing, concentrating its efforts for home or small business environments, hence paying less attention to other more "traditional" uses, like servers (although packages for most server tasks are available).
There are several community projects associated with PCLinuxOS. Since PCLOS includes the mklivecd script, there are several third-party distributions based on PCLOS. Some include:
The PCLinuxOS Magazine project is a community driven free publication focused on the users of PCLinuxOS by MyPCLinuxOS.com. This online publication was started in September 2006 by a group of PCLOS users with some publication experience. All content for the publication is solicited from the PCLOS user base.
The PCLinuxOS beautification project encourages and hosts user submitted media for visual aspects of PCLinuxos.
All the above projects are tracked and have forums on the larger MyPCLinuxOS , whose stated purpose is to be "the home site of all community projects related to PCLinuxOS", and offers help and support "whether you're looking to start a project,[or] join a project"
Nutrition
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Nutrition provides the cells of an organism with food, in a form they can use. Organisms need food to be able to keep their bodies working properly. They also need food to be able to do certain things. Malnutrition can happen when a person does not eat the right amount of nutrients. They can get better by changing their diet to have the right amount of the various nutrients.
Different organisms have different food requirements, and they eat different things in order to meet those requirements. Animals that do not eat meat, for example, will have to get certain nutrients like protein from other foods.
A nutrition expert is called a dietician. Nutritionists are different because they do not need the government to recognize them as experts. Anyone can call themselves a nutritionist.
The six main types of nutrient are carbohydrates, fats, minerals, protein, vitamins, and water. A macronutrient is a nutrient that needs to be eaten a lot. A micronutrient, such as a vitamin, is needed in smaller amounts, but it is still important. Carbohydrates are not needed by the body but most people eat a lot of them. Complex carbohydrates are more nutritious than simple carbohydrates. Complex carbohydrates are found in vegetables while simple carbohydrates are found in processed foods. They take longer to digest because they have more fiber. Because they stay in the stomach for longer they leave the person who has eaten them feeling fuller for longer. Protein is needed for building cells. It is found in milk, meat, fish, beans, eggs and other foods like quinoa. Protein is made of amino acids.
Fat is found naturally in some foods. People often eat it in processed foods such as cakes and chocolate. It is high in energy. Omega 3 and omega 6 fats are needed by the body. There are saturated fats and unsaturated fats. It is recommended that people avoid the saturated type. It has been linked with heart disease. Trans fats is also a fat people should avoid. A lot of people think that fat is bad in general, but it is still controversial. People are also advised not to eat too much sugar or salt.
Most people eat three meals a day. Eating every few hours keeps blood sugar stable. Some foods are good for us and some foods are bad.
Lei (Hawaii)
A lei is a flower necklace from Hawaii. The flower used most is the hibiscus or the orchid. May First is called "Lei Day" in Hawaii.
Orchid
The orchids are a large family of flowering plants, the Orchidaceae. They are herbaceous monocots.
There are between 22,000 and 26,000 species in 880 genera. They make up between 6–11% of all seed plants. Orchids can be found in almost every country in the world except for Antarctica.
People have grown orchids for a 5 number of years. They grow orchids for show, for science, or for food (for example, vanilla).
Some orchids have very special ways of pollination. For example, the Lady's Slipper can trap insects and make them pollinate the flower. Another instance is the Austrian orchid, which grows underground and is pollinated by ants.
Many orchids are myco-heterotrophs: their roots need fungi to break down organic material for them to absorb.
Colombia and Ecuador have many different species. The Brazilian Atlantic forest has over 1500 species. Other places with great variety are the mountains in the south of the Himalayas in India and China. The mountains of Central America and southeastern Africa also have various species, especially the island of Madagascar.
Ecuador has 3459 species, the greatest number recorded. After Ecuador is Colombia, which has 2723. After Colombia is New Guinea, 2717 and Brazil, which has 2590 species in all.
In warm places, where there is much grass, or in places where there is dry savanna and rocky fields, orchids grow in the ground. They have firm underground roots, and sometimes have tubers to help protect themselves against cold or snow. The tubers also help protect them against long drought or fire. The cold would freeze the roots if they were not protected to store the nutrients they need for blooming in the spring.
It is thought that some species are becoming extinct in the wild. This is mainly because people cut down forests for agriculture.
The complex cross-pollination mechanisms were described by Charles Darwin in his 1862 book "The Fertilisation of Orchids". Orchids have developed special pollination systems. The chances of being pollinated are often scarce, so orchid flowers usually remain receptive for very long periods, and most orchids deliver pollen in a single mass. Each time pollination succeeds, thousands of ovules can be fertilized. "Catasetum", a genus discussed briefly by Darwin, actually launches its sticky pollinia with explosive force when an insect touches a seta (hair), knocking the pollinator off the flower.
Pollinators are often visually attracted by the shape and colours of the flower. The flowers may produce attractive odours. In some extremely specialized orchids, such as the Eurasian genus "Ophrys", the labellum is adapted to have a colour, shape and odour which attracts male insects via mimicry of a receptive female. Pollination happens as the insect attempts to mate with flowers.
Many neotropical orchids are pollinated by male orchid bees, which visit the flowers to gather volatile chemicals they require to synthesize pheromonal attractants. Each type of orchid places the pollinia on a different body part of a different species of bee, so as to enforce proper cross-pollination. After pollination, the sepals and petals fade and wilt, but they usually remain attached to the ovary.
An underground orchid in Australia, "Rhizanthella slateri", is never exposed to light, and depends on ants and other terrestrial insects to pollinate it.
Some orchids mainly or totally rely on self-pollination, especially in colder regions where pollinators are rare.
The ovary typically develops into a capsule that splits along three or six longitudinal slits, while remaining closed at both ends. The ripening of a capsule can take two to 18 months.