Earth

Earth (pronounced /'???/) is the third planet from the Sun and is the major of the terrestrial planets in the Solar System, in both diameter and mass. It is also referred to as the Earth, Planet Earth, and the World, and in several contexts, Gaia and Terra.

Home to millions of species including humans, Earth is the only place in the world where life is known to exist. Scientific evidence indicates that the planet formed 4.54 billion years ago, and life appear on its surface within a billion years. Since then, Earth's biosphere has considerably altered the atmosphere and other abiotic conditions on the planet, enable the proliferation of aerobic organisms as well as the formation of the ozone layer which, jointly with Earth's magnetic field, blocks harmful emission, permitting life on land.

Earth's outer surface is divided into several rigid segments, or tectonic plates, that regularly travel across the surface over periods of many millions of years. About 71% of the surface is enclosed with salt-water oceans, the remainder consisting of continents and islands; liquid water, necessary for all known life, is not known to exist on any other planet's surface. Earth's interior remains active, with a thick layer of comparatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inside the core.

Grapefruit

The grapefruit is a subtropical citrus tree grown for its fruit which was initially named the "forbidden fruit" of Barbados.
These evergreen trees are frequently found at around 5-6 m tall, even though they can reach 13-15 m. The leaves are shady green, long up to 150 mm and thin. It produces 5 cm fair four-petalled flowers. The fruit is yellow-skinned, mainly oblate and ranges in diameter from 10-15 cm. The flesh is segmented and acidic, unreliable in color depending on the cultivars, which include white, pink and red pulps of varying sweetness. The 1929 US Ruby Red (of the Red blush variety) has the first grapefruit patent.
The fruit has only become popular from the late 19th century; before that it was only grown as a decorative plant. The US quickly became a major creation of fruit, with orchards in Florida, Texas, Arizona, and California. In Spanish, the crop is known as toronja or pomelo.

History museums

History museums cover the information of history and its meaning to the present and future. Some cover particular aspects of history or a particular locality; others are more general. Such museums contain a broad range of objects, including documents, artifact of all kinds, art, and archaeological substance. Antiquities museums think in more archaeological findings.

A common type of history museum is a major house. A historic house may be a building of special architectural interest, the birthplace or home of a famous person, or a house with an attractive history. Historic sites can also become museums, mostly those that mark public crimes, such as Tuol Sleng or Robben Island.
Another category of history museum is a living museum; a living museum is where people reorganize a time period to the fullest extent, including buildings, clothes and language. It is alike to historical rebuilding.

Plantation

A plantation is a deliberate planting of a crop, on a larger scale, frequently for uses other than cereal production or pasture. The word is most frequently used for plantings of trees and shrubs. The word tends also to be used for plantings maintain on financial bases other than that of survival farming. Crops may be called plantation crops because of their relationship with an exact type of farming economy. Most of these fit into place a large landowner, raising crops with economic value rather than for survival, with a number of employees carrying out the work. Often crops recently introduced to a region. In past times it has been connected with slavery, indentured labour, and other economic models of high injustice. However, arable and dairy farming are both frequently (but not always) barred from such definitions. A comparable economic structure in ancient times was the latitudinal that produced commercial amount of olive oil or wine, for export.