American fast food restaurants can be found in areas all over the world. This is an example of

Im gonna guess Globalization

cultrural diffusion

Explanation:

b.

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

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks