I need help with the independent variable, dependent variable, and controlled variable.

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Why are graphs useful when interpreting data