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USA-ME-BRUNSWICK Azienda Directories
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Azienda News:
- (PDF) How Many Plant Species are There, Where are They, and . . .
We argue that there are 450,000 species, two thirds of which live in the tropics, a third of all species are at risk of extinction, and they are going extinct 1000 to 10,000 times the background rate
- Are we in the midst of the sixth mass extinction? A view from . . .
ments The amphibians—frogs, salamanders, and caecilians—may be the only major group currently at risk globally A detailed worldwide assessment and subsequent updates show that one-third or more of the 6,300 species are threatened with extinction This trend is likely to accelerate because most amphibians occur in
- Megafauna - Wikipedia
There are variations in thresholds used to define megafauna as a whole or certain groups of megafauna Many scientific literature adopt Paul S Martin's proposed threshold of 45 kilograms (99 lb) to classify animals as megafauna However, for freshwater species, 30 kilograms (66 lb) is the preferred threshold
- CITES
CITES is an international agreement to ensure that trade in wild animals and plants does not threaten their survival
- 15. 6: Vertebrates - Biology LibreTexts
The skeletal system of mammals possesses unique features that differentiate them from other vertebrates Most mammals have heterodont teeth, meaning they have different types and shapes of teeth that allow them to feed on different kinds of foods These different types of teeth include the incisors, the canines, premolars, and molars
- Vertebrates – Introductory Biology: Evolutionary and . . .
The skeletal system of mammals possesses unique features that differentiate them from other vertebrates Most mammals have heterodont teeth, meaning they have different types and shapes of teeth that allow them to feed on different kinds of foods These different types of teeth include the incisors, the canines, premolars, and molars
- List of felids - Wikipedia
In addition to the extant species listed here, over 30 fossil genera have been described; these are divided into the subfamilies Felinae, Pantherinae, Proailurinae, and Machairodontinae This final subfamily includes the genus Smilodon , known as the saber-toothed cat, which went extinct around 10,000 years ago
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