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Jul 24, 2022 · In biology, a theory is a widely accepted explanation of a biological phenomenon based on sound evidence from rigorous empirical experiments and scientific observations. An example of a popular biological theory is Charles Darwin’s Theory of Evolution by Natural Selection.
A scientific theory is a broad explanation for events that is widely accepted as true. To become a theory, a hypothesis must be tested over and over again, and it must be supported by a great deal of evidence. People commonly use the word theory to describe a guess about how or why something happens.
A theory is a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts. The theory of gravitation, for instance, explains why apples fall from trees and astronauts float in space.
Jul 23, 2022 · A scientific theory is an explanation of natural phenomena that is based on experimentation and empirical evidence. A scientific theory is a well-established explanation of some aspect of the natural world. Theories come from scientific data and multiple experiments.
Aug 2, 2024 · Cell theory, fundamental scientific theory of biology according to which cells are held to be the basic units of all living tissues. First proposed by German scientists Theodor Schwann and Matthias Jakob Schleiden in 1838, the theory that all plants and animals are made up of cells marked a great.
Jul 24, 2024 · 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.
Define scientific theory. Contrast how the word theory is used in science and in everyday language. What is the germ theory of disease? How did it develop? Explain why Pasteur, rather than Fracastoro or Semmelweis, is called the father of germ theory.
