| A | B |
| Recovery Plan | A plan using scientific knowledge to help bring endangered species back from possible extinction |
| Recycling | Using waste products to create new products |
| Reserve | A protected area that cannot be used for building or growth |
| Scientific Journal | A scientific magazine |
| Technology | Any device, machine, or method to solve a human problem or question |
| Medical Technology | Any technology designed to solve a medical problem |
| Ozone | A form of oxygen |
| Patent | A government notice of ownership for a piece of technology |
| Pollution | Anything added to the environment that is harmful to living things |