Geologist study the lithosphere
Oceanographers study the hydrosphere
Meteorologist study the atmosphere
Astronomers study beyond the earth system and study the systems of other planets and heavenly bodies.
Environment scientists study all aspects of the Earth system, including the atmosphere, cryosphere, hydrosphere, geosphere, and biosphere.
C. An abundance of oil allowed humans to concentrate on other power technologies
Geology..geophysics Botany. subfields in geography
