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Both. Some are still being tested.
True
Observational evidence
Scientific theories can be rejected by new reliable evidence.
Fact supported theories and not guesses, but reliable accounts of the real world. Most theories accepted by scientists have been repeatedly tested by experiments and thus can be used to make predictions, which are then most likely to be true
No
New scientific ideas are accepted or rejected based on compelling evidence.
Theories can be changed or rejected if and when the scientific evidence no longer supports the theory.
New scientific ideas are accepted or rejected based on compelling evidence.
A hypothesis will be rejected if it fails the necessary testing required for it to become a scientific theory.
Both. Some are still being tested.
true A+
true A+
True
Observational evidence
He rejected the idea of christian huygens according to him light travels only on a straight line.
No, because the scientists did not have a hypothesis