I would say C. Telling the teacher about a chemical spill
Proteins are made of carbon, hydrogen,oxygen, and nitrogen (CHON). Nucleic acids such as DNA and RNA contain carbon,hydrogen, oxygen, nitrogen, and phosphorus(CHON P). The body also needs trace amounts of other elements such as calcium,potassium, and sulfur for proper functioning of muscles, nerves, etc.
Answer:
it is he
Explanation:
beacuse Noble gases have 2 volence
Answer:
I think third C12/hv is right answer