12. When can a theory be revised? if the general public does not understand the theory

when a new scientist begins working on it

after 10 years

if new knowledge expands and corrects our understanding

if new knowledge expands and corrects our understanding

Explanation:

However, science is always changing. As new evidence is uncovered, a theory may be revised or replaced by a more useful explanation.

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.

distance, luminosity, brightness, radius, chemical composition, and temperature