from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The waters of the earth's surface as distinguished from those of the lithosphere and the atmosphere.
- n. The water vapor in the earth's atmosphere.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. All the waters of the Earth, as distinguished from the land and the gases of the atmosphere.
from the GNU version of the Collaborative International Dictionary of English
- n. The aqueous vapor of the entire atmosphere.
- n. The aqueous envelope of the earth, including the ocean, all lakes, streams, and underground waters, and the aqueous vapor in the atmosphere.
from The Century Dictionary and Cyclopedia
- n. The aqueous envelop of the globe.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the watery layer of the earth's surface; includes water vapor
Sorry, no etymologies found.
GEOG 108: Introduction to Physical Geography I - A first year course dealing with the study of the Earth's atmosphere, biosphere and hydrosphere.
While admitting that the idea remained one of the greatest uncertainties in Mars research, they added that: "Our findings lend credence to the hypothesis that an ocean formed on early Mars as part of a global and active hydrosphere."
She did not recall if there was a debate on evolution and creationism, nor did she recall mention of hydrosphere theory or water canopies.
She did not recall Freshwater teaching about hydrosphere theory.
In cross she conceded that she had told Millstone that Freshwater taught hydrosphere theory, that tracks showed that dinosaurs and humans had lived at the same time, that Mt.
You can't pollute something with no atmosphere, hydrosphere and ecology.
We need to use robotic drilling and definitive testing on Mars to penetrate what is probably the only potential biogenesis and evolutionary environment on Mars that has been stable for 3.8 billion years, namely, the cryosphere-hydrosphere interface below the surface.
But your use of the phrase “hydrosphere assault cannon” in a previous comment suggests otherwise.
Primary energy sources of the atmosphere and oceans are derived from solar radiation, terrestrial heat flow, volcanism and hydrothermal activity, reinforced or mitigated by feedback effects from the hydrosphere, cryosphere and biosphere.
The biosphere is the biological component of earth systems, which also include the lithosphere, hydrosphere, atmosphere and other "spheres" (e.g. cryosphere, anthrosphere, etc.).