How do scientists design a system? O A. They use a system that has already been designed.
O B. They ignore influences from sources outside of the experiment.
C. They include all possible influences in their model.
D. They isolate their experiment from unwanted influences.

I'm into politics, why am i getting these questions? it's 4: 30 am in texas. my paper is due in 2 days. i'm the one needing in political science

The real answer is keeping the world healthy so we won’t die

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.