Visit the How to Research Guide to learn about the research process, especially these pages:
Here are some examples of how to combine key terms for environmental science topics:
| Technique | Example |
| Combine separate concepts using "AND" | ugly fruit AND waste |
| Combine similar terms using "OR" | ugly OR imperfect |
| Put parentheses around similar terms for complex searches | (ugly OR imperfect) AND (fruit OR vegetable) AND waste |
| Use quotation marks to find an exact phrase | "ugly fruit" AND waste |
| Use the truncation symbol (usually *) to make a search term open-ended | (ugly OR imperfect) AND (fruit* OR vegetable*) AND waste |