Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure.
Energy can not be created nor destroyed, leaving the only possible answer to be "b," when energy changes from one form to another.
By looking at the diagram, and my knowledge of Punnett squares, i would say B. 4:16
Ask your teacher. Depending on what he/she wants, the teacher may or may not deduct points from your assignment. Good luck!
