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23 hours ago · The narwhal is an agile and medium-sized whale. Adult males are around 4.1 m (13 ft) long from nose to tail tip, and females average 3.5 m (11 ft); the overall body length of 3.0 to 5.5 m (9.8 to 18.0 ft) is suggested for both males and females.
23 hours ago · A native of various open habitats in sub-Saharan Africa, males weigh about 6.0 tonnes (13,200 lb) on average. The largest elephant ever recorded was shot in Angola in 1974. It was a male measuring 10.67 metres (35.0 ft) from trunk to tail and 4.17 metres (13.7 ft) lying on its side in a projected line from the highest point of the shoulder, to ...
23 hours ago · Megalodon size estimates vary depending on the method used, with maximum total length estimates ranging from 14.2–20.3 meters (47–67 ft). A 2015 study estimated the average total body length at 10.5 meters (34 ft), calculated from 544 megalodon teeth, found throughout geological time and geography, including adults and juveniles.
- †O. megalodon
- †Otodus
23 hours ago · Ticks' appearance and size change depending on their stage and blood intake. "The nymph blacklegged tick would blend right in on a poppy-seed bagel," says Dr. Thomas Mather, a professor of public health entomology at the University of Rhode Island and director of the school's Center for Vector-Borne Disease and its TickEncounter Resource Center.
23 hours ago · The Texas State Bison Herd is also a useful example of the deleterious effects of extreme population bottlenecking, with an average natality rate of 0.376 offspring per female and a 1st-year mortality rate of 52.6% from 1997 to 2002, compared to an average natality rate of 0.560 offspring per female and a 1st-year mortality rate of 4.2% for the ...
23 hours ago · Birds figure throughout human culture. About 120 to 130 species have become extinct due to human activity since the 17th century, and hundreds more before then. Human activity threatens about 1,200 bird species with extinction, though efforts are underway to protect them. Recreational birdwatching is an important part of the ecotourism industry.
23 hours ago · Generation Z (often shortened to Gen Z ), colloquially known as Zoomers, [1] [2] [3] is the demographic cohort succeeding Millennials and preceding Generation Alpha. Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years.
