| Answer | Crossword Clue |
|---|---|
| EPA | Org. concerned with greenhouse gas |
| EPA | Org. concerned with greenhouse gases |
| EPA | Federal org. with a "personal greenhouse gas emissions calculator" |
| EPA | Gp. concerned with greenhouse gases |
| DOE | Federal div. concerned with gas consumption |
| petrochemistry | The branch of chemistry concerned with petroleum and natural gas, and with their refining and processing |
| electronics | The branch of physics and technology concerned with the design of circuits using transistors and microchips, and with the behavior and movement of electrons in a semiconductor, conductor, vacuum, or gas |
