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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.
![Sceloporus undulates, the eastern fence lizard, is one of the most widely distributed lizard species](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_20_50_164053.jpeg)
![Species currently endangered in Canada include (a) the Burrowing Owl, Athene cunicularia; (b) Taylor](https://biology-forums.com/gallery/47/medium_33_22_09_11_9_40_13_18261512.jpeg)