at use hydrocarbons heterotrophs or autotrophs? are they anaerobic or aerobic? what is the terminal acceptor and byproduct of this type of metabolism?…

1. do organism that use hydrocarbons heterotrophs or autotrophs? are they anaerobic or aerobic?
2. what is the terminal acceptor and byproduct of this type of metabolism?
3. what is beta oxidation and how its related to bioremediation of oil spills.
4. what was exxon forced to do to promote the growth of these bacteria after they dumped crude oil in alaska?

Thank you