Well sure. There are many commercials now a day that have been done away with and some that are more commonly used because of the way that society has grow and developed and shaped into different ways. For instance, it is more common for sex to be used to sell a product where as in the 1960 it was less common to find any mention of sex.
The largest mountains on the continents are formed by stress deformation.
This is also know as strain, which is a process that occurs when the intensity of the stress is greater then the internal strength of the rock. This kind of activity, forming of mountains, occurs when to tectonic continental plates with same densities are colliding, so under the pressure, stress, they create, the area of collision is lifting up.
Answer:
The main reason there are no big cities is due to natural resources to support them, mainly water. Most comes from underground as there are no lakes or big rivers that run through that part of the country with a constant flow to support large populations. Its a great place to live and visit.
