Which of the following is a mixture? steel water oxygen gold

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.

Which of the following are guidelines to follow for obtaining accurate observations

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion