Rather than chase their food, horned toads wait for unsuspecting prey. Often, horned toads sit near an anthill until their prey comes close enough to eat, then they swallow it whole. While in captivity with other reptiles, horned toads take the same leisurely approach to eating as in the wild. During feeding time, horned toads hang back while other reptiles eat, sometimes even after all of the available food has been eaten. As a result, housing horned toads with other species is not advised.
Radon is a natural radioactive gas without odour, colour or taste. It cannot be detected. without special equipment. Radon occurs as a product of uranium decay. Uranium is a. natural radioactive material found in varying amounts in all rocks, soil, concrete and. bricks. It occurs everywhere on earth, especially in rocky and mountainous areas.
Radon progeny--the decay products of radon gas--are a well-recognized cause of lung cancer in miners working underground. When radon was found to be a ubiquitous indoor air pollutant, however, it raised a more widespread alarm for public health. To develop appropriate public policy for indoor radon, decisionmakers need a characterization of the risk of radon exposure across the range of exposures people actually receive.