Which of the following statements is true? OA. If a single scientific experiment contradicts a well-established theory, the theory is automatically invalid.
ОВ.
Once an idea becomes a scientific theory, it is permanent and cannot be changed.
OC
Scientific explanations are built by combining evidence that can be observed with what people already know about the
world.
OD
Scientific explanations only consider evidence that is observed within controlled, laboratory experiments.
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