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9 public questions tagged with this topic.

What is the primary cause of species extinction in the last 500 years?

Human activities such as habitat destruction, pollution, and over-exploitation have caused a rapid increase in species extinction rates. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept.

The term vaccination was derived from the Latin word 'vacca' meaning:

The word vaccination originates from Latin feminine noun vacca meaning cow, itself derived from Proto-Indo European root *wokeh meaning cow, reflecting historical link between dairy cattle disease cowpox and protection against smallpox. English physician Edward Jenner in 1796 observed that Gloucestershire milkmaids exposed to cowpox pustules from cow udders developed mild illness but subsequently seemed immune to devastating smallpox epidemics affecting humans. He termed procedure vaccination from vacca to honor bovine source, distinguishing from earlier variolation using smallpox material. La

Ref: Baxby Vaccination etymology; Riedel Proc Baylor 2005 vacca cow Latin; WHO Smallpox history.

The old name of IUCN was

Original name at foundation was International Union for Protection of Nature abbreviated IUPN, reflecting early emphasis on protecting wildlife from extinction. By 1956, scope expanded beyond protection to include sustainable use and habitat management, prompting formal change to International Union for Conservation of Nature and Natural Resources, retaining IUCN abbreviation. Briefly from 1990 to 2008, publicity name World Conservation Union was used to improve public recognition, but legal name reverted to IUCN for historical continuity and brand identity. Mastery of this rule helps candidat

Ref: IUCN Name Evolution Archive 1948 IUPN to IUCN 1956; Wikipedia IUCN Formerly World Conservation Union