| A | B |
|---|
| PETROLEUM | OIL THAT IS TAKEN FROM THE GROUND |
| FOSSIL | ANY REMAINS , IMPRESSION , OR TRACE OF A LIVING THING OF A FORMER GEOLOGIC AGE > EXAMPLES ; SKELETONS OR FOOT PRINTS |
| SYNTHETIC | SUBSTANCES OR PRODUCTS MADE BY CHEMICAL COMBINATIONS SUCH S PLASTICS OR ARTIFICIAL FIBERS > ALSO USED TO DESCRIBE THINGS AS NOT REAL OR GENUINE |
| PESTICIDES | CHEMICALS USED TO KILL PESTS SUCH AS INSECTS |
| INDUSTRY | GENERAL BUSINESS ACTIVITY IN A PARTICULAR FIELD AND OFTEN NAMED AFTER THE BUSINESS ACTIVITY'S PRODUCT > EXAMPLE ; AUTOMOBILE INDUSTRY |
| ORGANIC | CHARACTERISTIC OF , OR PERTAINING TO , OR DERIVED FROM LIVING ORGANISMS |
| GREENHOUSE EFFECT | CAUSED BY THE EARTH'S ATMOSPHERE TRAPPING SOLAR RADIATION ( HEAT ) , WHICH IS THE RESULT OF THE PRESENCE IN THE ATMOSPHERE OF GASES SUCH AS CARBON DIOXIDE , WATER VAPOR , AND METHANE , AND KEEPS THE THE HEAT FROM ESCAPING THE EARTH'S ATMOSPHERE |
| FEUD | ARGUMENT OR BATTLE USUALLY BETWEEN TWO PEOPLE OR FAMILIES |
| EFFICIENCY | ACCOMPLISHMENT OF OR ABILITY TO ACCOMPLISH A JOB WITH A MINIMUM EXPENDITURE OF TIME AND EFFORT |
| GEOTHERMAL | OF OR RELATING TO THE INTERNAL HEAT OF THE EARTH |
