Answer:
A: Eating a sandwich
Explanation:
During labs eating is a big no. Some food can catch on fire, or be contaminated or breed germs that can affect the experiment. Wearing googles is a good idea and tying back hair is a must when using fire. The work area should always be clean so A is the answer
The structure is calcium ions.
Answer:
American politician Elbridge Gerry, Vice President of the United States at the time of his death, who was Governor of Massachusetts.
Explanation:
I think it's nucleic acid.
