What happens to energy in an open system? OA. Energy can enter but not exit an open system.
OB. Energy can enter or exit an open system.
OC. Energy can exit but not enter an open system.
OD. Energy cannot enter or exit an open system.

Essay-alternative energy sources research sources of energy that are being developed. write a report of 350-400 words discussing the information you learned concerning the development of various energy sources and the impact that you think they will have on your life. include sources cited at the end of your report using the mla format. follow the rubric guidelines. note that wikipedia is not an appropriate resource for a research paper. worth 99