sound without wires. In 1885 the German scientist Hertz made a machine that produced radio waves and a receiver which could detect them from distance the radio. Soon after that the makers of the first radio realized that it could also be used for `broadcasting'messages for information or entertainment. Regular radio bradcasting had first started in the United States in 1921. It was immediately popular. New radio stations mushroomed. Journalism is one of the most importnant professions. It informs citizens about events is the community, the nation, and the world. The reports of journalists also help people form opinions about current affairs. Every day, journalists throughout the world gather, write and edit material for thousands of news stories. Local reporters, for example, cover school board meetings, fires, sports events and other local stories. Other journalists, including foreign correspondents cover national and international news
I can give example about sheep memory. Every summer, just about time when apples are cooked, my mothers sheep flock goes to find appletrees. They could go there every season and after winter in barn it would be obvious that they wouldnt even remeber but they do. What senses do you think sheep has? Sensory discrimination abilities and their uses Sheep like other species have adapted thier senses to achieve remarkable discrimination skills. These allow them to identify importnant individuals and objects in their environment and communication of social signals. Popular belief tends to emphasise the absolute importance of smell for sheep in line with many other mammals, however as we shall see this another misconception with all three major senses playing essential roles. Vision Sheep depend heavily on their vision. They have excellent peripheral vision and can see behind themselves without turning their heads. However, they have poor depth perception.
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