What is the most supported theory on formation of earth?

core accretion

Explanation:

The first and most widely accepted theory, core accretion, works well with the formation of the terrestrial planets like Earth but has problems with giant planets. The second, the disk instability method, may account for the creation of these giant planets.

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.

answer at the divergent plate boundary in the middle of the ocean;