toxic fine particles
91coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
92sponge — spongeless, adj. spongelike, adj. spongingly, adv. /spunj/, n., v., sponged, sponging. n. 1. any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, siliceous or calcareous internal skeleton or… …
93Fertilizer — Tennessee Valley Authority: Results of Fertilizer demonstration 1942 …
94Chemical warfare — For other uses, see Chemical warfare (disambiguation). This article forms part of the series Chemical agents Lethal agents Blood agents Cyanogen chloride (CK) …
95digestive system disease — Introduction any of the diseases that affect the human digestive tract. Such disorders may affect the esophagus, stomach, small intestine, large intestine (colon), pancreas, liver, or biliary tract. A prevalent disorder of the digestive… …
96soap and detergent — ▪ chemical compound Introduction substances that, when dissolved in water, possess the ability to remove dirt (detergent) from surfaces such as the human skin, textiles, and other solids. The seemingly simple process of cleaning a soiled… …
97Medical uses of silver — The medical uses of silver include its incorporation into wound dressings to treat external infections, and its use as an antiseptic and disinfectant in medical appliances. Silver is also promoted within alternative medicine in the form of… …
98Sponge — This article is about the aquatic animal. For the porous cleaning tool, see Sponge (material). For other uses, see Sponge (disambiguation). Sponge Temporal range: Ediacaran–Recent …
99Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn …
100digestive system, human — Introduction the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… …
