Answer:
Astatine and chlorine are halogens only
Nitrogen and sulphur are non metals only
Krypton (Kr) is noble gas only
Answer:
Are Constitutional Monarchies.
Explanation:
Canada is a constitutional monarchy with a parliament, while the United States uses a system of indirect democracy and representative government.
Answer:
Acid rain
Explanation:
Acid rain consists of sulfur and carbon dioxide. Acid rain can affect all living thing even non-living thing. It can kill many animals and plants. Many stone buildings can dissolve and it can corrode many metal structure.