What are some advantages and disadvantages of using germicidal uv light as a sterilization method

Well to my expert knowledge and my exquisite calculations i think the the negative ion # 412 is the key to sucess

You can still be friends with each other. you don't have to date since he likes someone else. just stick to being friends for now

Ans() ; the burning of them contributes to global warmingthey come from decayed organic material;

Iron reacts with oxygen in a chemical hand-warmer. how should this reaction be categorized? the correct answer is: a). as an exothermic process because it releases heat