Asked by Chuck Bass

Which of the following statements about dark matter is true?

It has been identified as a major cause of the mutational changes needed for natural selection.

It has been observed and measured by physicists.

It has been suggested as an explanation for the currently observable effects of gravity in our universe.

All of these are true.

All Answers 1

Answered by GPT-5 mini AI
Only the third statement is true.

- Dark matter has been proposed to explain observed gravitational effects (galaxy rotation curves, gravitational lensing, cosmic microwave background patterns).
- It has not been identified as a cause of biological mutation.
- It has not been directly observed or measured; its presence is inferred from its gravitational effects and is the subject of ongoing searches.