A scientific theory is a deductive statement accepted by a recognized element of the scientific community, and that represents the only possible conclusion of a thorough, rigorous, and disciplined series of scientific testings of successive critically reasoned hypotheses. A scientific theory is often a set of statements that collectively describe how one facet of the universe works. Unlike common theories, scientific theories must be:
#1 is questionable. Darwin's theory of evolution by natural selection directly contradicted and invalidated Lamarck's theory of evolution by the inheritability of acquired traits.
A scientific theory must be:
1. Naturalistic. It cannot invoke the intervention of a deity, or of a "superior" being or beings, or of unknown physical laws not in operation today (a common creationist claim). It also must be supported by observable facts and reproducible experiments. "Cold fusion theory" is naturalistic, as it does not invoke divine or supernatural intervention, but it is not supported by reproducible experiments. It is therefore not scientific.
2. Falsifiable. It must be open to being disproven when a newer theory, accounting better for all the facts, is formulated. To claim that present life-forms were created by an all-powerful, essentially unknowable Divine Creator, is an unfalsifiable claim, and therefore scientifically invalid.
3. Predictive. A scientific theory should be able to predict what will happen under specific conditions. Because creationism cannot predict anything (since everything depends on the will of the Creator), it is not scientific. In the field of evolution, predictability works this way: given certain environmental conditions, scientists can predict that the life-forms developing under those conditions will show adaptations to take the greatest advantage of such conditions. For example, it can be safely predicted that, in the Sahara desert, life-forms, whether animal or plant, will have metabolisms that work to conserve optimally moisture. Evolution does not specifically predict the development of camels, or true xerophyte plants, but any animals or plants that make their permanent home in the Sahara (or other extremely arid areas) will necessarily show water-conserving metabolisms.
A scientific theory is a hypothesis based on a scientific topic.
A well tested idea that explains and connects a wide range of observations is a scientific theory. This is sometimes confused with a scientific law.
When the idea that all living things might be composed of cells was first proposed in the 1800s, it should have been called a hypothesis. This is because at that stage, there was not enough empirical evidence or experimental support to elevate it to the status of a theory. The concept needed further testing and validation before being considered a scientific theory.
The idea of evolution is that evolution is a fact and the theory of evolution by natural selection explains much about the fact of evolution. Your question is ill posed. A more modern phrase would say your question is malformed. How could the fact of evolution be a threat to anything? How could the theory that is the backbone of biology not be one of the greatest progressions in science? Much confusion between fact and theory. Theory explains fact and encompasses fact and is a higher scientific concept than fact.
Because it is an internally consistent explanation of a mechanism of evolution that is supported by many lines of converging evidence, that has been repeatedly tested and is capable of making testable predictions. Pretty much the scientific definition of theory.
No, not everyone agreed with Charles Darwin's theory of evolution by natural selection when it was first proposed in the 19th century. It was a controversial idea that challenged existing religious and scientific beliefs about the origins of life. It took some time for his ideas to gain widespread acceptance in the scientific community.
a scientific test
theory or fact that of course is influenced by a theory
The other way around. Its hard to become a theory.
The theory has been tested (against reality).
law is based on fact theory is a concept/idea
A theory
theory
By being tested against reality multiple times.
By being tested against reality multiple times.
When a scientific idea has been tested many times
a scientific theory is a well tested explanation for a wide range of observations of experiments in other words is an idea that makes sense.
law is based on fact theory is a concept/idea