A more formal style is appropriate for a composition for your teacher or for a letter to somebody you don’t know personally.
A more informal style is appropriate for an article to your school magazine or a letter to your friend.

When you start reading any modern newspaper, you learn about many significant events happening throughout the whole world. You can read about political, economical and cultural life of the humanity. You can also read about sport, about lifestyle and about fashion. Some people prefer high-tech news. And some choose the travel column to plan their holidays. There is also an opinion column where people can speak out. Every event having impact on humanity is echoed in newspapers. Many war conflicts, disasters and crashes happen nowadays. That's why the reader is overwhelmed by the shocking news from all over the world. The world is like the ocean, and the paper is like a seashell.

When you start reading any modern newspaper, you learn about many significant events happening throughout the whole world. You can read about political, economical and cultural life of the humanity. You can also read about sport, about lifestyle and about fashion. Some people prefer high-tech news. And some choose the travel column to plan their holidays. There is also an opinion column where people can speak out. Every event having impact on humanity is echoed in newspapers. Many war conflicts, disasters and crashes happen nowadays. That's why the reader is overwhelmed by the shocking news from all over the world. The world is like the ocean, and the paper is like a seashell.