Nana


 * __What is the effects of mobile phone on human beings?__**

High frequency microwaves can be used to transmit and recieve signals from cellular phones. The more you use a cell phone, the more the brain tissue heats up and this can harm your brain. After about 40-45 minutes the ammount of sugar in a brain increases. Scientific evidence proved that changes in glucose use increased about 7 percent in some parts of the brain after a longer time on the phone.
 * How do cell phones effect the human body?**

How do radio waves affect our body?
Radio waves heat up body tissues. Radio waves also can increase a person's risk of getting cancer, defects at birth, and genetic defects through changing the structure of the DNA. When Radio waves enter the body it can cause body tissues to heat up. Radio Waves increase the chances of getting cancer and other diseases as a result of changes in the DNA structure.

====**Cellular phones send out signals as well as recieving them. Cell phones also use microwaves. When one person calls another person the sound of the microwaves are transmitted to towers. From the towers the signals are sent on the sound microwaves to a hub when it's a long distance call. The hub sends a signal to another tower or directly to the person.**====
 * How do mobile phones use electromagnetic radiations?**

Cellular phones have the ability to send and receive signals through microwaves. When a call is made from one person to another the sound of microwaves are sent to towers. From the towers the signals are spread on the sound microwaves are from the towers. From the towers the signals are then spread on the sound microwaves to a hub if it is a long distance call. The hub can also send a signal directly to a tower or to the person.

** E ** lectromagnetic waves travel in a vacum and in the air. The radio waves used in mobile communication are also a part of the electromagnetic spectrum. ====Cellular phones send out and receive signals using electromagnetic radiations. This is done through the mast that are mounted on buildings which transmit the signals from cell phones. ====