In an experiment, what is an independent variable? 1. the variable that will always prove a hypothesis correct

2. it is the group designed for comparison in the experiment

3. the variable that responds to what the scientist changes in an experiment

4. the variable a scientist purposely changes in an experiment

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.