There are three main reasons why people are concerned that cell phones (also known as “mobile” or “wireless” telephones) might have the potential to cause certain types of cancer or other health problems:
Cell phones emit radiofrequency energy (radio waves), a form of non-ionizing radiation, from their antennas. Tissues nearest to the antenna can absorb this energy.
The number of cell phone users has increased rapidly. As of December 2014, there were more than 327.5 million cell phone subscribers in the United States, according to the Cellular Telecommunications and Internet Association. This is a nearly threefold increase from the 110 million users in 2000. Globally, the number of subscriptions is estimated by the International Telecommunications Union to be 5 billion.
Over time, the number of cell phone calls per day, the length of each call, and the amount of time people use cell phones have increased. However, improvements in cell phone technology have resulted in devices that have lower power outputs than earlier models.
Answer:
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The correct answer is - Toronto and Moscow.
The two major population centers in the taiga biome are the biggest city in Canada, Toronto, and the capital of Russia, Moscow.
Even though the taiga is often considered as inhospitable place for living, it is obviously not the case in Canada and Russia, where most of the population is actually located in this biome.
Moscow is the biggest city in Russia with its around 12 million inhabitants. It is the economic, cultural, and political center of the country.
Toronto, though not a capital, it is still the most populated city in Canada with its little over than 2.7 million inhabitants, and it is the most powerful city in every department in the second biggest country in the world.
