After the prison was closed, the British government gave the island to the people from Pitcairn Island. Pitcairn, with only 30 hectares of land suitable for farming, could no longer cope with a large population. All 194 people were moved to Norfolk in 1856. These people were descendants of the mutineers from HMS Bounty. They arrived on the island on 8 June 1856, and the anniversary is celebrated every year as Bounty Day.
Norfolk Island has a humid subtropical climate ("Cfa" in the Köppen climate classification).
Atlas (mythology)
Atlas is a Titan in Greek mythology. He is the son of Iapetos. He has seven daughters with the Oceanid Pleione. They are called the Pleiades.
After the war between the Titans and the Olympians, Atlas was punished. Zeus forced him to hold the heaven on the western edge of the world. Later, the story about him changed and it was said that he held the whole world on his shoulders. Mostly in modern times, he is shown holding a globe of the world.
Heracles came to Atlas and asked him to for help with one of his Labours. He wanted Atlas to get the "Golden Apples" for him as only an immortal could take them. Atlas agreed, but only if Heracles would hold up the sky. Atlas was pleased to be free from its weight but Heracles tricked him into holding it again.
Perseus also came to Atlas for help after killing Medusa. Atlas, who was tired of holding the heavens, asked Perseus to allow him to see Medusa's head. Perseus took out Medusa's head and Atlas turned into a mountain.
Atlas was turned into a mountain called, "[The] Atlas Mountains."
El Paso, Texas
El Paso is a city in the U.S. state of Texas (near Ciudad Juarez, Chihuahua, Mexico). It is in El Paso County and is the county seat (the city where the county is governed). It is at the western end of Texas, and is along Interstate 10. The name comes from El Paso de Norte, meaning The Passageway to the North, which was shortened to El Paso.
The large majority of the city's inhabitants are Hispanic.
El Paso has a desert climate.
On 3 August 2019, 22 people were killed in a mass shooting.
Ecosystem
An ecosystem (or ecological system) is a large community of living organisms (plants, animals and microbes) in a particular area. The living and physical components are linked together through nutrient cycles and energy flows. Ecosystems are of any size, but usually they are in particular places.
Each ecosystem has its own community. An aquarium community, for example, can have small fish and other organisms. A desert community may have cacti, small snakes, and scorpions. A pond community can have frogs, insects, snakes, and plants, and a forest community may have rabbits, foxes and pine trees. The species in a community are divided into populations according to the particular habitats and ecological niches in the ecosystem.
Ecosystems are stable, but changeable. They react to major changes in the environment, especially climate changes. For example, the major rainforests have lasted for a long time (perhaps 50 million years or more in some cases). As the rainfall and temperature changes, they change. We know that the Amazon rainforest shrank in size during ice ages, and expanded in the warmer periods.
What drives all ecosystems is the primary production. Primary production is the production of organic matter from inorganic carbon sources. This happens through photosynthesis. It drives the carbon cycle, which influences global climate via the greenhouse effect.
Through the process of photosynthesis, plants capture energy from sunlight and use it to combine carbon dioxide and water to produce carbohydrates and oxygen. The photosynthesis carried out by all the plants in an ecosystem is called the gross primary production (GPP). About 48–60% of the GPP is consumed in plant respiration. The rest is known as the net primary production (NPP). Total photosynthesis is limited by a range of environmental factors. These include the amount of light available, the amount of leaf area a plant has to capture light (shading by other plants limits photosynthesis), the supply of carbon dioxide and water, and suitable temperatures for carrying out photosynthesis.
Some of the major types of ecosystem:
House of Stuart
The House of Stewart, or Stuart, is a royal house of Scotland and England.
The Tudor dynasty ended when Queen Elizabeth I died in 1603. She named her cousin James I as heir. He became James I of England, and started the Stuart dynasty.
Here are the rulers of the Stuart dynasty:
Parasitism
Parasitism is a form of one-sided symbiosis. The parasites live off the host. They may, or may not, harm the host. Parasitoids, on the other hand, usually kill their hosts. A parasitic relationship is the opposite of a mutualistic relationship. Examples of parasites in humans include tapeworms and leeches. World-wide, the most serious cause of human death by a parasite is malaria.
A definition:
"Humans are hosts to nearly 300 species of parasitic worms and over 70 species of protozoa, some derived from our primate ancestors and some acquired from the animals we have domesticated or come in contact with during our relatively short history on Earth. Our knowledge of parasitic infections extends into antiquity".
When the above definition is applied, many organisms which eat plants can be seen as parasites, because they feed largely or wholly on one individual plant. Examples would include many herbivorous insects: the Hemiptera or true bugs (leafhoppers, froghoppers, aphids, scale insects and whiteflies). The larvae of Lepidoptera usually feed and mature on a single individual of the host plant species, and what they eat accounts for most of the food for their complete life span. Moreover, caterpillars can and often do serious damage to the host's foliage. Other orders also have many parasitic herbivores: Thysanoptera (thrips), Coleoptera (beetles), Diptera (flies).
Parasites of larger animals account for much research done for veterinarian and medical purposes. These parasites include viruses, bacteria, protozoa, flatworms (flukes and tapeworms), nematodes (roundworms), arthropods (crustacea, insects, mites). Parasitic wasps and flies are of great interest to the entomologist, and may be used in biological control.
On the other hand, many blood-sucking insects (such as mosquitoes) have only brief contact with a host, and so perhaps should not be regarded as parasites.
A huge number of species are parasitic. A survey of the feeding habits of British insects showed that about 35% were parasites on plants, and slightly more were parasites on animals. That means that nearly 71% of insects in Britain are parasitic. Since British insects are better known than those elsewhere (because of the length of time they have been studied), this means that the majority of insect species throughout the world are parasitic. Also, there are several other invertebrate phyla which are wholly or largely parasitic. Flatworms and roundworms are found in virtually every wild species of vertebrate. Protozoan parasites are also ubiquitous. Hence parasitism is almost certainly the most common feeding method on Earth.
Parasites are adapted to small, "separated" habitats. For a parasite, each host is an island surrounded by a hostile environment. For a small organism, the distances between hosts, or groups of hosts, is a hazard. Adaptations to bridge this hazard are:
So parasites exist in small, genetically similar groups with little flow of genes between them. In consequence, they have adaptations to solve their problems of dispersal and reproduction.
Parasites face an environment which varies in time and space. Consequently, both local (geographic) races and polymorphism occur. Both may occur in the same species. Parasites are very specialised feeders: many species have only one host at any stage of their life cycle. A few use more than two host species.