How do the muscles in your arm extend your arm outward?

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Draw the conjugate acid for the following base. remember to include charges and non-bonding electrons where necessary.

Ican construct an argument based on data about the risk and benefits of renewable and nonrenewable energy sources