Question

explain why and how theories may be changed or replaced over time.

Explanation:

Theories are based on evidence and understanding at a given time. New evidence, tech, and re - evaluation can change them. Community acceptance is also key.

Answer:

Theories may change or be replaced due to new evidence, technological advancements, and re - evaluation of existing data. New evidence can contradict or expand on previous understanding. For example, in science, new experimental results may show that a long - held theory is inaccurate. Technological advancements allow for new types of data collection and analysis, which can lead to new insights. Re - evaluation of existing data with new perspectives or methods can also reveal flaws or new interpretations in old theories. The process usually involves scientific inquiry, peer - review, and the acceptance of the new understanding by the relevant academic or professional community.