Answer:
Radio waves are used to transfer signals to and from the cell phone. Modern mobile phone networks use cells because radio frequencies are a limited, shared resource.
All of the cell sites are connected to telephone exchanges (or switches), which in turn connect to the public telephone network.
Answer:First one is (Peter gets into a fight with the musicians because they will not play a happy song for him. The second answer is petty argument like fueds etc.
Explanation:
I think tropical rainforests I could be wrong
Answer: supplied air mask
Explanation: because air can go in the mask and the gases and fumes can hurt you.
