| D055593 |
Geological Phenomena |
Structures, properties, and processes involving the inanimate matter of Earth. |
Geological Concepts,Geological Processes,Geological Phenomenon,Geological Process,Geophysical Phenomena,Geophysical Process,Geophysical Processes,Concept, Geological,Concepts, Geological,Geological Concept,Phenomena, Geological,Phenomena, Geophysical,Phenomenon, Geological,Process, Geological,Process, Geophysical,Processes, Geological,Processes, Geophysical |
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| D018534 |
Earth, Planet |
Planet that is the third in order from the sun. It is one of the four inner or terrestrial planets of the SOLAR SYSTEM. |
Earth (Planet),Planet Earth |
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| D018559 |
Exobiology |
The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life. |
Astrobiology,Extraterrestrial Life,Space Biology,Biologies, Space,Biology, Space,Life, Extraterrestrial,Space Biologies |
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| D018707 |
Volcanic Eruptions |
The ash, dust, gases, and lava released by volcanic explosion. The gases are volatile matter composed principally of about 90% water vapor, and carbon dioxide, sulfur dioxide, hydrogen, carbon monoxide, and nitrogen. The ash or dust is pyroclastic ejecta and lava is molten extrusive material consisting mainly of magnesium silicate. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
Volcanic Ash,Volcanic Eruption,Volcanic Gases,Ash, Volcanic,Eruption, Volcanic,Eruptions, Volcanic,Gases, Volcanic |
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