Faisal AL-Shuwair

 perennials

Examples of evergreen perennials include Begonia and banana.

Examples of deciduous perennials include goldenrod and mint.

Examples of monocarpic perennials include Agave and some species of Streptocarpus.

Examples of woody perennials include maple, pine, and apple trees.

Examples of herbaceous perennials used in agriculture include alfalfa, Thinopyrum intermedium, and Red clover.

The dahlia is a perennial.

biennial

Examples of biennial plants are parsley, Lunaria, silverbeet, Sweet William, colic weed, and carrot. Plant breeders have produced annual cultivars of several biennials that will flower the first year from seed, e.g. foxglove and stock.

The Sweet William Dwarf plant is a biennial plant^[1]

annual

Examples of true annuals include corn, lettuce, pea, cauliflower, watermelon, bean, zinnia and marigold

Peas are an annual plant.

Random access memory (usually known by its acronym, RAM) is a form of computer data storage. Today it takes the form of integrated circuits that allows the stored data to be accessed in any order (i.e., atrandom). The word random thus refers to the fact that any piece of data can be returned in a constant time, regardless of its physical location and whether or not it is related to the previous piece of data.^[1]This contrasts with storage mechanisms such as tapes, magnetic discs and optical discs, which rely on the physical movement of the recording medium or a reading head. In these devices, the movement takes longer than the data transfer, and the retrieval time varies depending on the physical location of the next item.The word RAM is mostly associated with volatile types of memory (such as DRAM memory modules), where the information is lost after the power is switched off. However, many other types of memory are RAM as well (i.e., Random Access Memory), including most types of ROM and a kind of flash memory called NOR-Flash.

 DefinitionsThe general term for more than one offspring in the same pregnancy (multiple birth) is multiples; a fetus which develops alone in the womb is called a singleton.

[edit]Statistics

There are estimated to be approximately 125 million human twins and triplets in the world (roughly 1.9% of the world population), and just 10 million monozygotic twins (roughly 0.2% of the world population and 8% of all twins).^[1] The current rate in the United States is 31 twin births per 1,000 women.^[2]Due to the limited size of the mother’s womb, multiple pregnancies are much less likely to carry to full term than singleton births, with twin pregnancies lasting only 37 weeks (3 weeks less than full term) on average.^[3] Since premature births can have health consequences for the babies, twin births are often handled with special precautions.The Yoruba, a large west African ethnic group, have the highest rate of twinning in the world, at 45 twins per 1,000 live births.^[4][5][6] Some researchers have claimed this may be because of high consumption of a specific type of yam, Dioscorea rotundata or white yam containing a natural hormone phytoestrogen which may stimulate the ovaries to release an egg from each side.^[7][8]

[edit]Types of twins

There are five common variations of twinning. The three most common variations are all dizygotic:

• Male–female twins are the most common result, 50 percent of DZ twins and the most common grouping of twins.
• Female DZ twins (sometimes called sororal twins)
• Male DZ twins

The other two variations are monozygotic twins:

• Female MZ twins
• Male MZ twins (least common)

Among non-twin births, male singletons are slightly (about five percent) more common than female singletons. There are also the mirror image variations: this is where the twins develop reverse asymmetric features. About 25% of monozygotic twins are mirror image twins. The rates for singletons vary slightly by country. For example, the sex ratio of birth in the US is 1.05 males/female,^[9] while it is 1.07 males/female in Italy.^[10]However, males are also more susceptible than females to death in utero, and since the death rate in utero is higher for twins, it leads to female twins being more common than male twins.Another variety of twins, “polar body twins,” is a phenomenon that was hypothesized to occur and may recently have been proven, very rarely, to exist. This would occur when a portion of a mature egg separates from itself. This is known as the first polar body, and it carries all the same genetic information as the egg. If polar body twins are fact, they would occur when two sperm fertilize both the egg and the first polar body. Generally the first polar body disintegrates. Polar body twinning would result in “half-identical” twins.^[11]

                                                                                         يشهد يوم الاحد المقبل لقلء الهلال بالاتحاد وهو من سيحدد  هوية  بطل الدوري ويدخل الهلال هذا اللقاء بفرصة واحده وهي الفوز اما الاتحاد بفرصتي الفوز والتعادل وسيكون اللقاء في الرياض في استاد الملك فهد الدولي

  الهلال السعودي    -    الاهلي الاماراتي         2             -     1                                            احرز الاهداف  للهلال ياسر القحطاني وميريل رادوي وللاهلي احمد خليل   الاتحاد السعودي     -     الجزيره الاماراتي      0   -       0                     

A minicomputer (colloquially, mini) is a class of multi-user

computers that lies in the middle range of the computing spectrum, in between the largest multi-user systems (mainframe computers) and the smallest single-user systems (microcomputers or personal computers). The class at one time formed a distinct group with its own hardware and operating systems, but the contemporary term for this class of system is midrange computer, such as the higher-end SPARC, POWER and Itanium -based systems from Sun Microsystems, IBM and Hewlett-Packard.

CPU” redirects here. For other uses, see CPU (disambiguation).  Die of an Intel 80486DX2 microprocessor (actual size: 12×6.75 mm) in its packaging.A central processing unit (CPU) is an electronic circuit that can execute computer programs. This broad definition can easily be applied to many early computers that existed long before the term “CPU” ever came into widespread usage. The term itself and its initialism have been in use in the computer industry at least since the early 1960s (Weik 1961). The form, design and implementation of CPUs have changed dramatically since the earliest examples, but their fundamental operation has remained much the same.Early CPUs were custom-designed as a part of a larger, sometimes one-of-a-kind, computer. However, this costly method of designing custom CPUs for a particular application has largely given way to the development of mass-produced processors that are suited for one or many purposes. This standardization trend generally began in the era of discrete transistor mainframes and minicomputers and has rapidly accelerated with the popularization of the integrated circuit (IC). The IC has allowed increasingly complex CPUs to be designed and manufactured to tolerances on the order of nanometers. Both the miniaturization and standardization of CPUs have increased the presence of these digital devices in modern life far beyond the limited application of dedicated computing machines. Modern microprocessors appear in everything from automobiles to cell phones to children’s toys.

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