New information mostly,
sometimes just better understanding.
6.8 × 106
How do scientific theories develop and change?
Theories change because more/different information is discovered.
experiment
no
recurring-phase theories and sequential-stage theories
Because our society develops and further testing can disprove theories.
Yes
As more and more data is collected and evaluated on a topic, scientists' theories or hypothesis may change based on the new information.
There is no such thing as a "scientic theory".
Do Lamarck's theories provide a good explanation for the change in months? Why or why not?
Scientific theories can be modified and in some cases completely scrapped based upon new research.