Question

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which statement best describes why scientific knowledge is considered open to change?
science is fixed and does not change once a theory is established.
science is based on opinions that frequently change.
new evidence can lead to updates in scientific understanding.
scientific ideas are replaced every few years regardless of evidence.

Explanation:

Science is a dynamic field. Theories are not fixed forever. When new evidence emerges, it can challenge existing scientific understanding. For example, in the field of physics, the discovery of new particles or phenomena can lead to updates in theories. Science is based on evidence, not just opinions. And scientific ideas are not replaced randomly every few years; it is the evidence - based process that drives changes.

Answer:

New evidence can lead to updates in scientific understanding.