Environmental Studies
- gel filtration
- geminate
- gene bank
- general adaptation
- general circulation
- general-adaptation syndrome
- generalization
- generation time
- geo-electric section
- geobotanical exploration
- Geochronology
- geographical floral element
- geometric series
- geostrophic current
- geostrophic wind
- Geothermal Gradient
- germ plasm
- Ghyben-Herzberg relationship
- gibber plain
- Gilbert-type delta