A scientific theory requires modification or replacement by a new theory when it no longer adequately explains observed phenomena or when new evidence emerges that contradicts its predictions. Scientific theories are based on the best available evidence, but as knowledge ...

A scientific theory is a well-substantiated explanation of a natural phenomenon that is based on a large body of evidence collected through observation, experimentation, and analysis. It is not a mere guess or speculation but a comprehensive framework that unifies ...

The scientific method is a systematic and logical approach used to investigate natural phenomena, acquire new knowledge, or correct and integrate previous understanding. It is a step-by-step process that ensures reliability, objectivity, and accuracy in scientific inquiry.