nema
nema In graptolites, a long, hollow, rod- or thread-like structure extending beyond the sicula See GRAPTOLOIDEA.
More From encyclopedia.com
Catastrophism , Introduction
Catastrophism is the general concept that the history of Earth has been profoundly affected by sudden violent events. In the Biblical cr… Hollow Earth , Edmund Halley (1656–1742) is best known for having calculated the orbit of a comet that passes by Earth every 76 years. The comet known as Halley's m… Rammed Earth , rammed. Structure, e.g. wall, made by beating down earth contained between formwork or shuttering with a heavy implement. If cement and other strengt… Historical Geology , CONCEPT
Geologists are concerned primarily with two subjects: Earth's physical features and the study of the planet's history. These two principal br… Gaia Hypothesis , The Gaia (pronounced guy-ah) hypothesis is the idea that Earth is a living organism and can regulate its own environment. This idea argues that Earth… Planetary Science , CONCEPT
The term planetary science encompasses a whole range of studies involving a combination of earth sciences and astronomy. Sometimes known as p…
You Might Also Like
NEARBY TERMS
nema