Evolution is a
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theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.
prediction because it makes an educated guess about events that will occur in the future
variable because it is a factor that can be changed during experimentation.
law because it has been proven without exception under certain stated conditions.
theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.
Diagram 1 shows the fossilized remains of the lower portion of a camel's leg. Each subsequent diagram shows the same portion of a camel's leg, but the diagrams are from progressively later time periods. Diagram 4 shows the most recent fossil. These diagrams demonstrate
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how fossil evidence cannot be used to support evolution.
that all living organisms have increased in size over time.
how fossil evidence can be used to show the evolution of a species over time.
that modern camels have more toes than earlier species of camels.
how fossil evidence can be used to show the evolution of a species over time.
The correct answer is theory. In the scientific context, a theory is an explanation that is supported by extensive observations, experimentation, and reasoning. It is not a prediction, variable, or law.
To understand the meaning of the terms theory, prediction, variable, and law in the context of scientific research, here is a brief explanation:
1. Theory: In science, a theory is an explanation that is based on a substantial amount of evidence and has been tested and supported by multiple lines of research and observation. A scientific theory is a well-substantiated explanation of some aspect of the natural world that is acquired through rigorous scientific methods. Theories are constantly evaluated, refined, and modified based on new evidence and discoveries.
2. Prediction: A prediction is an educated guess or a forecast about what is likely to happen in the future. Predictions are typically based on scientific knowledge and theories but are not equivalent to a theory itself. Predictions can be tested and evaluated to determine their accuracy and validity.
3. Variable: In scientific research, a variable is a factor that can be changed or manipulated during an experiment. Variables are used to study cause-and-effect relationships by altering one variable while keeping others constant. Variables can be independent (the factor being changed or manipulated) or dependent (the factor being measured or observed).
4. Law: A scientific law is a descriptive statement or mathematical equation that describes a fundamental principle or pattern observed in nature. Scientific laws summarize the results of observations and experiments and provide a concise description of how the natural world behaves under specific conditions. Unlike theories, scientific laws do not explain why things happen but rather describe what happens.
In the case of evolution, it is considered a scientific theory because it is a well-supported explanation for the diversity of life on Earth based on extensive evidence from various scientific disciplines such as genetics, paleontology, and comparative anatomy. Evolutionary theory has been tested and refined over time and is the cornerstone of modern biology.