Environmental Studies
- East African steppe floral region
- East Australian Current
- easterly wave
- ecesis
- eco-organ
- ecological efficiency
- ecological indicator
- ecological isolation
- ecological pyramid
- ecosphere
- ecotone
- ecotype
- ectotherm
- eddy
- eddy viscosity
- Ediacaran
- effect hypothesis
- effective population size
- effective porosity
- effective precipitation