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To protest, grumble or object
Answer:
The events of the 1980s and 1990s helped to maintain world peace were the Persian Gulf war, the Iran-Iraq war, Lebanon war, the bombing of Libya, and the last stage of the cold war.
Explanation:
These events were the major events that allowed world peace to be kept in between the 1980s and the 1990s, however, they did it because they threatened it. It is very complicated, but the reasons are that these weren't high scalation conflicts, they were local conflicts and didn't clash the major party's that could trigger a world conflict directly. They only participated indirectly, by providing support to the participating party's.
<u>Answer</u>:
Cell phones contain rechargeable batteries that transform chemical energy into electrical energy. When using your cell phone, electrical energy is first transformed into <u>Electromagnetic waves </u>that are transmitted through the air.
<u>Explanation</u>:
When chemical energy is converted into electrical energy in cell phones, then this electrical energy firstly transformed or converted into electromagnetic waves which travels through air. Then this electromagnetic wave is converted into sound energy due to which users are able to listen audio, music, movies etc on their mobile phones.
The electrochemical energy that stored in a cell is removed as electrical energy in the process of discharging. There are so many other thermal and electrochemical processes taking place at the same time.
