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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.