Iron. Well actually steel, but iron is the closest.
Their tentacles act as propellers to help with a speedy escape
That would be the waxing and waning crescents.
Hope it helps!
You need evidence to support a conclustion
I think the correct answer would be option 1. The career that is most suited for a nuclear chemist would be studying the production and use of radioactive sources. These type of chemists are mostly involved in research and processes which requires knowledge in nuclear chemistry.<span />