Search results
Results from the WOW.Com Content Network
This flickering can cause problems for some individuals with light sensitivity [1] and are associated with headaches and eyestrain. Such lamps are listed as problematic for some individuals with autism, epilepsy, [2] lupus, [3] chronic fatigue syndrome, Lyme disease, [4] and vertigo. [5] Newer fluorescent lights without magnetic ballasts have ...
There are more than 2,000 species of tiny (0.04 to 0.15 inches), wingless, blood-sucking fleas that live on the body of the host they infest. Although fleas cannot fly, they have developed ...
Environment portal. Ecology portal. v. t. e. Electromagnetic radiation can be classified into two types: ionizing radiation and non-ionizing radiation, based on the capability of a single photon with more than 10 eV energy to ionize atoms or break chemical bonds. [1] Extreme ultraviolet and higher frequencies, such as X-rays or gamma rays are ...
Photosensitivity in humans. Light sensitivity or photosensitivity refers to a notable or increased reactivity to light. Apart from vision, human beings have many physiological and psychological responses to light. In rare individuals an atypical response may result in serious discomfort, disease, or injury. Some drugs have a photosensitizing ...
Evidence indicates fleas from other mammals have a role in human plague outbreaks. [27] The lack of knowledge of the dynamics of plague in mammal species is also true among susceptible rodents such as the black-tailed prairie dog (Cynomys ludovicianus), in which plague can cause colony collapse, resulting in a massive effect on prairie food ...
Aphaniptera. Flea, the common name for the order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds. Fleas live by ingesting the blood of their hosts. Adult fleas grow to about 3 millimetres (8 inch) long, are usually brown, and have bodies that are "flattened" sideways or ...
Fleabites vs. mosquito bites. Mosquitos and fleas prefer the same warmer climates, and both of these pesky critters will suck your blood after a bite. (Keep an eye out for these dangerous bugs ...
Radiation-induced cancer. Exposure to ionizing radiation is known to increase the future incidence of cancer, particularly leukemia. The mechanism by which this occurs is well understood, but quantitative models predicting the level of risk remain controversial. The most widely accepted model posits that the incidence of cancers due to ionizing ...