The correct answer is - e. longer life expectancy.
The chronic diseases most commonly affect the older population, due to the weakening of the body as it gets into the latter stages of its existence. Since the life expectancy has increased significantly in the last century, and it is further increasing, even though with lower tempo nowadays, there's more and more people that reach older life, thus the number and percentage of the chronic diseases is ever-growing, especially in the developed countries where the population is in general aging as well.
These mountain ranges would be the Sierra Madre Occidental on the west and the Sierra Madre Oriental on the SE. The Sierra Madre Occidental at least has had historically some rich silver deposits. Both mountain ranges are part of the Western Cordillera which stretches from Alaska to the southern tip of South America.
I'm pretty sure the answer is increased petroleum exports. I hope this helps
Cracks in rocks : mechanical
Lichen growing on rocks : chemical
Roots or plant growth making cracks in the concrete : mechanical
Worn away statues : chemical and mechanical in my opinion
Exposed rocks : mechanical
Rust on rocks : chemical
Trains. They covered most of Europe during the European industrial revolution.
