Human evolution | History, Stages, Timeline, Tree, Chart, & Facts ...
2025年1月7日 · human evolution, the process by which human beings developed on Earth from now-extinct primates. Viewed zoologically, we humans are Homo sapiens, a culture-bearing upright-walking species that lives on the ground and very likely first evolved in Africa about 315,000 years ago.
Evolution | Definition, History, Types, & Examples | Britannica
2025年1月9日 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.
Evolution - Natural Selection, Adaptation, Genetics | Britannica
2025年1月9日 · Biological evolution is the process of change and diversification of living things over time, and it affects all aspects of their lives—morphology (form and structure), physiology, behaviour, and ecology. Underlying these changes are changes in the hereditary materials.
Evolution - Reconstruction, History, Theory | Britannica
2024年12月16日 · Evolution - Reconstruction, History, Theory: The advances of molecular biology have made possible the comparative study of proteins and the nucleic acids, DNA and RNA. DNA is the repository of hereditary (evolutionary and developmental) information.
Revolution | Causes, Impact & Legacy | Britannica
2024年12月20日 · Revolution, in social and political science, a major, sudden, and hence typically violent alteration in government and in related associations and structures. The term is used by analogy in such expressions as the Industrial Revolution, where it refers to a radical and profound change in economic
American Revolution | Causes, Battles, Aftermath, & Facts
2025年1月17日 · The American Revolution was an insurrection carried out by 13 of Great Britain’s North American colonies that began in 1775 and ended with a peace treaty in 1783. The colonies won political independence and went on to form the United States of America.
Evolution - Darwin, Natural Selection, Genetics | Britannica
2025年1月9日 · Darwin accumulated evidence showing that evolution had occurred, that diverse organisms share common ancestors, and that living beings have changed drastically over the course of Earth’s history. More important, however, he extended to the living world the idea of nature as a system of matter in motion governed by natural laws.
Timeline of the American Revolution - Encyclopedia Britannica
2024年12月20日 · What caused the American Revolution? And what happened during the conflict? From controversial taxes to the battlefield and beyond, we explore the road to revolution and the creation of the United States.
American Revolution | Causes & Effects | Britannica
List of some of the major causes and effects of the American Revolution. The revolution began after Britain imposed new taxes and trade restrictions on the 13 American colonies, fueling growing resentment and strengthening the colonists’ objection to their lack of representation in the British Parliament.
Automobile - Invention, Evolution, Impact | Britannica
2025年1月3日 · Automobile - Invention, Evolution, Impact: Unlike many other major inventions, the original idea of the automobile cannot be attributed to a single individual.