shell of an astronomical object
Deductions
- shell of an astronomical object is for example technosphere ⇐ (technosphere is a shell of an astronomical object), (is a is inverse of is for example)
- shell of an astronomical object is for example biosphere ⇐ (biosphere is a shell of an astronomical object), (is a is inverse of is for example)
- biosphere is a shell of an astronomical object ⇐ (geographic envelope is subclass of shell of an astronomical object), (biosphere is a geographic envelope)
- technosphere is a shell of an astronomical object ⇐ (geographic envelope is subclass of shell of an astronomical object), (technosphere is a geographic envelope)