The word Isotropic is a Greek word and comprised of two words; isos and tropos meaning same and qualities respectively. Accordingly, the isotropic materials are those materials which have the same values of quality in all areas. This means such metals are uniform in all directions, for instance, Glass and metals.
4th option. the movement of people to cities.
Coastal erosion may be caused by hydraulic action, abrasion, impact and corrosion by wind and water, and other forces, natural or unnatural. ... Also erosion commonly happens in areas where there are strong winds, loose sand, and soft rocks. The blowing of millions of sharp sand grains creates a sandblasting effect.p
The area of geographical study that involves examining different populations in the world and including their distribution and trade patterns is : Human geography
It's dealing with how human activity affect the earth surface
hope this helps
