| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| It's estimated Earth's mean temperature may rise 4°C by the mid-21st cent. due to increase of this gas | carbon dioxide | $500 | J | WEATHER | 1988-07-22 | #915 | |
| Though a small part of the atmosphere, this gas has a big influence thru the "greenhouse effect" | carbon dioxide | $300 | J | WEATHER | 1986-04-10 | #414 |