1. A European funded research project on coastal erosion (eurosion.org)
2. Slang for the slow decline of the European cohesion of member states or the monetary union (euro)
Coastal eurosion does not exist. Coastal erosion does, this is the gradual decline of the coastline position due to the forces of wind and water. Eurosion, however, did exist. Eurosion was a European research project running from 2002-2005 that mapped the problem of coastal erosion on a European scale and gave best practices and policy recommendations dealing with the problem.
Because it gets put into huge landfills and it causes soil eurosion
It can take as many years as it needs to. It all depends on what kind of weathering occurs, and how big the grain size is.
The rock may have been subjected to sudden changes in temperature, leading to stress fractures. It could also have undergone mechanical stress, such as being hit or impacted by another object. Additionally, chemical weathering processes, like hydration or oxidation, could weaken the rock over time, causing it to eventually break apart.