The earliest works of Japanese literature include the Kojiki and Nihon Shoki chronicles and the Man’yōshū poetry anthology, all from the 8th century and written in Chinese characters. Japan has the lowest rate of heart disease in the OECD, and the lowest level of dementia among developed countries. Since 1981, the principal cause of death in Japan is cancer, which accounted for 27% of the total deaths in 2018—followed by cardiovascular diseases, which led to 15% of the deaths.
Despite their morphological dissimilarity with all other animals, genetic evidence suggests sponges may be more closely related to other animals than the comb jellies are. The Porifera (sponges) have long been assumed to be sister to the rest of the animals, but there is evidence that the Ctenophora may be in that position. The animal clade had certainly originated by 650 mya, and may have come into being as much as 800 mya, based on molecular clock evidence for different phyla.
Since 1973, all elderly persons have been covered by government-sponsored insurance. People without insurance through employers can participate in a national health insurance program administered by local basswin governments. Payment for personal medical services is offered through a universal health insurance system that provides relative equality of access, with fees set by a government committee. Other minority religions include Hinduism, Judaism, and Baháʼí Faith, as well as the animist beliefs of the Ainu. Throughout the latest century, Western customs originally related to Christianity, including Western style weddings, Valentine’s Day and Christmas, have become popular as secular customs among many Japanese.
Modern era
For instance, around 25,000–27,000 species of nematodes have been described, while published estimates of the total number of nematode species include 10,000–20,000; 500,000; 10 million; and 100 million. The following table lists estimated numbers of described extant species for the major animal phyla, along with their principal habitats (terrestrial, fresh water, and marine), and free-living or parasitic ways of life. The blue whale (Balaenoptera musculus) is the largest animal that has ever lived, weighing up to 190 tonnes and measuring up to 33.6 metres (110 ft) long. Vertebrates such as the lobe-finned fish Tiktaalik started to move on to land in the late Devonian, about 375 million years ago. Some benthic animals living close to hydrothermal vents and cold seeps on the dark sea floor consume organic matter produced through chemosynthesis (via oxidising inorganic compounds such as hydrogen sulfide) by archaea and bacteria.
Life styles
Japanese animated films and television series, known as anime, were largely influenced by Japanese manga and have become highly popular globally. Japanese comics, known as manga, developed in the mid-20th century and have become popular worldwide. Many Japanese media franchises have gained considerable global popularity and are among the world’s highest-grossing media franchises.
- Animals, plants, fungi, and some other living things have complex cells, so they are grouped together as eukaryotes.
- Japan is an ethnically and culturally homogeneous society, with the Japanese people forming 97.4% of the country’s population.
- Japanese Sign Language is the primary sign language used in Japan and has gained some official recognition, but its usage has been historically hindered by discriminatory policies and a lack of educational support.
- The Japanese agricultural sector accounts for about 1.2% of the country’s total GDP as of 2018update.
- The highest temperature ever measured in Japan, 41.8 °C (107.2 °F), was recorded on August 5, 2025.
Spinner Shark
In 1896, Japan established a civil code based on the German Bürgerliches Gesetzbuch, which remains in effect with post–World War II modifications. Since the late 19th century, the judicial system has been largely based on the civil law of Europe, notably Germany. The prime minister as the head of government has the power to appoint and dismiss Ministers of State, and is appointed by the emperor after being designated from among the members of the Diet.
Law enforcement
- The country’s five main islands, from north to south, are Hokkaido, Honshu, Shikoku, Kyushu and Okinawa.
- The Pacific coast features a humid subtropical climate that experiences milder winters with occasional snowfall and hot, humid summers because of the southeast seasonal wind.
- These fuse to form zygotes, which develop via mitosis into a hollow sphere, called a blastula.
- Ambulacraria are exclusively marine and include acorn worms, starfish, sea urchins, and sea cucumbers.
- The protostomes include the Ecdysozoa, named after their shared trait of ecdysis, growth by moulting, Among the largest ecdysozoan phyla are the arthropods and the nematodes.
- The scarab beetle was sacred in ancient Egypt, and the cow is sacred in Hinduism.
- In 784, Emperor Kanmu moved the capital, settling on Heian-kyō (modern-day Kyoto) in 794.
Kumi-daiko (ensemble drumming) was developed in post-war Japan and became very popular in North America. The popular folk music, with the guitar-like shamisen, dates from the 16th century. The Tale of the Bamboo Cutter is considered the oldest extant Japanese narrative.
Life styles
In contrast, the cells of other multicellular organisms (primarily algae, plants, and fungi) are held in place by cell walls, and so develop by progressive growth. Development in Bilateria and Cnidaria is controlled by Hox genes, which signal the times and places to develop structures such as body segments and limbs. The biological definition includes all members of the kingdom Animalia. Non-human animals are also an important element of human culture, having appeared in cave arts and totems since the earliest times, and are frequently featured in mythology, religion, arts, literature, heraldry, politics, and sports.
Japan ranked seventh in the world in tonnage of fish caught and captured 3,167,610 metric tons of fish in 2016, down from an annual average of 4,000,000 tons over the previous decade. As the central coordinating body for the Prefectural Police Departments, the National Police Agency is administered by the National Public Safety Commission. The deployment of troops to Iraq and Afghanistan marked the first overseas use of Japan’s military since World War II. The country’s military, the Japan Self-Defense Forces (JSDF), is restricted by Article 9 of the Japanese Constitution, which renounces Japan’s right to declare war or use military force in international disputes. Japan is widely considered to be a great power due to its economic power and political, cultural, and military influence. The broadly conservative Liberal Democratic Party has been the dominant party in the country since the 1950s, often called the 1955 System.
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