Ecology

Mineral elements provide the color in fireworks. Barium produces bright greens; strontium yields deep reds; copper produces blues; and sodium yields yellow. Other colors can be made my mixing elements; strontium and sodium produce brilliant orange;...
The air pressure in the ground around most houses is often greater than the air pressure inside the house. Thus, air tends to move from the disturbed zone, resulting from its construction, into the house through openings in the house's foundation. All...
It has spread from South Carolina all the way down to Florida, west into Texas, and has now been located in California. For more information about this invasive species, read Chinese Tallow: Invading the Southeastern Coastal Plain.
Chinese tallow has been cultivated in nurseries and sold as an ornamental tree used for landscaping; however, it is now classified as a nuisance species in some locations and can no longer be sold. It has separate pollen and seed-bearing flowers, and...
To maintain our standard of living, each person in the United States requires over 48,000 pounds of minerals each year: 12,528 lb. of stone 9,385 lb. of sand and gravel 888 lb. of cement 280 lb. of clays 418 lb. of salt 309 lb....
A naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties.  
Tallow has been cultivated as a seed-oil crop in China for at least 14 centuries. Candles, soap, cloth dressing, and fuel are made from the tallow. Chinese vegetable tallow is a solid fat that is in the outer covering of the seeds. The kernels produce an...
Asian carp are found in the great rivers of the central United States, especially in the Missouri, Illinois, and Mississippi Rivers. Bighead and silver carp are not known to be established outside the greater Mississippi and Mobile River basins, though...
A number of Burmese pythons have been found on Key Largo, and a few in the Lower Keys.  However, there is as yet no evidence of a breeding population anywhere in the Keys.  Because pythons regularly escape or are released from captivity, it can be...
No. Although sturgeon and catfish can be found in the same habitats and they both have barbels (whiskerlike growths extending from the jaw), they are not closely related. Sturgeon are much more primitive than catfish. There are some catfish sold for...