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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after
Extent of agricultural activity across the planet (data from Foley et al. 2005). Extent of agricultural activity across the planet (data from Foley et al. 2005).
Biology Forums Topic Display (2012 - Late 2014) Biology Forums Topic Display (2012 - Late 2014)
Suzuki Harunobu, Two Courtesans, Inside and Outside the Display Window, Japanese. Suzuki Harunobu, Two Courtesans, Inside and Outside the Display Window, Japanese.
Tumor marker analysis of a patient with no evidence of disease monitored for tumor recurrence. The ... Tumor marker analysis of a patient with no evidence of disease monitored for tumor recurrence. The ...
Ribosome structure and tRNA-binding sites interpreted from cryo-EM–generated data Ribosome structure and tRNA-binding sites interpreted from cryo-EM–generated data
Video: Embryonic development - Week 4

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