Answer:
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
Personally, i would use a 3-D printer, but you can use any material that you have, and have an example next to you for reference if you aren't going to 3-D print.
Answer:
normal margins will fit the most content on a page