- Sektör: Education
- Number of terms: 13055
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Founded in 1879 and named after Texas' greatest hero General Sam Houston, Sam Houston State University is public shcool within the Texas state university system and located in Huntsville, Texas.
It's a multicultural institution that offers 79 bachelorette degree programs, 54 masters and five ...
Part of a sunspot. It is a large magnetic solar storm and the penumbra is the outer most ring of the storm composed of dark fibrils.
Industry:Chemistry; Weather
Particles carried by water or air that are deposited in other areas or elevation are called sediment. Usually associated with water flow, sediment will accumulate at the mouth of a river or stream as it empties into a larger, slower moving body of water. Sediment deposition is also effected by particle size.
Industry:Chemistry; Weather
Particles that are larger than two micrometers in diameter. They come form sea sprays, volcanoes, crushing or grinding of rocks, wind blown soil, and account for about 95% of the aerosol particles in ambient air.
Industry:Chemistry; Weather
Percentage of fossil fuel CO<sub>2</sub> emissions that remain in the atmosphere, about 55%. Carbon dioxide mixing ratio measurements have been taken in Hawaii since 1958 by the research group of Charles David Keeling (1928-2005), a project initiated with support from Roger Revelle at Scripps Oceanographic Institute and Harry Wexler at the U. S. Weather Service. These data demonstrated that atmospheric carbon dioxide gas concentrations were increasing in the atmosphere and not just being absorbed by the ocean and plants. Atmospheric carbon dioxide gas phase concentration is lower during the spring when plants take up carbon dioxide and higher in the winter when the majority of plants are conserving energy, growing slower, and fallen plants are decaying and thus causing a rising fluctuation of carbon dioxide.
Industry:Chemistry; Weather
Period spanning from 225 to 65 million years before present (Myr BP), this period was marked by widespread warmth of the planet's surface, especially in the higher latitudes. During this time the continents were joined in a single supercontinent. This situation most likely facilitated the meridional transport of heat by ocean currents, thus resulting in an even distribution of global heat.
Industry:Chemistry; Weather
Periodic variation in the direction, either easterly or westerly, of tropical lower stratospheric winds. The direction changes every 26 months.
Industry:Chemistry; Weather
Photosynthesis is a biological process which plays a vital role in cycling the atmosphere's carbon dioxide, while simultaneously producing oxygen and other complex substances. Green plants, with chlorophyll, utilize the sun's energy to convert carbon dioxide and water into the plant biomass while oxygen that is released into the atmosphere.
Industry:Chemistry; Weather
Physical or chemical process or action which results in the formation of regularly-shaped, -sized, and -patterned solid forms known as crystals.
Industry:Chemistry; Weather
Plankton are forms of marine, organic life that gather vital energy for life through photosynthesis. Since they are very low on the food chain, they are vital to all marine life. They are also vital to the atmosphere in that they consume large amounts of carbon dioxide, which contribute to enhanced global warming when excess amounts are present. Plankton are considered to be one of the more important contributors of oxygen to the atmosphere.
Industry:Chemistry; Weather
