They contain fluorine atoms, carbon atoms and chlorine atoms.
Answer:
Today it is one of the first problems of Egypt, that having such a high population density in this area makes the quality of human life less.
The great problem is that the majority of its population has a poorly developed socio-economic level since the country's economy has not expanded at the same rate as its inhabitants.
Explanation:
Man tends to want more and more well-being. Throughout the world the number of vehicles and refrigerators is increasing rapidly. The time will come when population growth and increased prosperity collide. Large flows of people may have to travel the world in search of food and prosperity.
In the western front, they used Trench Warfare Method
In Trench Warfare the opposing teams would build some sort of trench surrounding their defended area to prevent the the opposing team in invading their protected Area. It's best used as a Defensive method which require the armies to stay hold and defended their position. That's why they're not moving so much
