| Abbreviation | Definition |
|---|---|
| BC | black carbon |
| BCAA | Benton Clean Air Authority |
| BCEE | Board Certified Environmental Engineer |
| BCEE | Building Civil and Environmental Engineering |
| BCEN | British Columbia Environmental Network |
| BCEP | Bard Center for Environmental Policy |
| BCES | Belize Center for Environmental Studies |
| BCES | Biology Chemistry and Environmental Science |
| BCES | Board Certified Environmental Scientist |
| BCID | Bat Call Identification |
| BCIN | Bibliographic database of the Conservation Information Network |
| BDS | Biohazard Detection System |
| BE | to Become Extinct |
| BEA | Baseline Environmental Assessment |
| BEA | Baseline Environmental Assessments |
| BEACH | Beach Environmental Assessment Communication Health |
| BEACH | Beach Environmental Awareness Campaign Hawaii |
| BEAG | Biomedical and Environmental Assessment Group |
| BEAN | Berkeley Environmental Alumni Network |
| BEAN | Brown Environmental Action Network |