Unlike an observational study, an experiment can prove: A. Cause and effect.

B. The nature of the mind.

C. Correlation.

D. The lack of bias.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

What happens to an isotope during radioactive decay?