Migration do not affect the natural environment

The two principal impacts that migration is likely to have on the environment are its contribution to GHG emissions, and therefore climate change, and to the 'amenity', 'enjoyment' or 'benefit', that is provided by aspects of the natural environment that are seen to be of value by many people

Explanation:

so yeh

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