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2024年5月26日 · human body, the physical substance of the human organism, composed of living cells and extracellular materials and organized into tissues, organs, and systems. Human anatomy and physiology are treated in many different articles.
- The Editors of Encyclopaedia Britannica
2024年5月28日 · This article is concerned with the skeletal muscles of the human body, with emphasis on muscle movements and the changes that have occurred in human skeletal musculature as a result of the long evolutionary process that involved the assumption of upright posture.
As the head of the government of the United States, the president is arguably the most powerful government official in the world. The president is elected to a four-year term via an electoral college system. Since the Twenty-second Amendment was adopted in 1951, the American presidency has been limited to a maximum of two terms.
2024年5月25日 · Buddhism, religion and philosophy that developed from the teachings of the Buddha (Sanskrit: “Awakened One”), a teacher who lived in northern India between the mid-6th and mid-4th centuries bce (before the Common Era). Spreading from India to Central and Southeast Asia, China, Korea, and Japan, Buddhism has played a central role in the spiritual, cultural, and social life of Asia, and ...
What is the speed of light? What is a rainbow? Why is light important for life on Earth? What is colour's relation to light? light, electromagnetic radiation that can be detected by the human eye.
2024年5月27日 · They write new content and verify and edit content received from contributors. electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. Although all electromagnetic waves travel at the speed of light in a vacuum, they do so at a wide range of frequencies, wavelengths, and photon energies.
2024年5月6日 · slang. language, a system of conventional spoken, manual (signed), or written symbols by means of which human beings, as members of a social group and participants in its culture, express themselves. The functions of language include communication, the expression of identity, play, imaginative expression, and emotional release.
