Examlex
In Cartesian space, the direction of the line is represented by the vector
or any nonzero multiple of this vector.
Phylogeny
The study of the evolutionary history and relationships among individuals or groups of organisms.
Veins
Blood vessels that carry deoxygenated blood towards the heart, except for the pulmonary and umbilical veins.
Coelacanths
Coelacanths are rare and ancient fish known for their lobed fins, which were once thought to be extinct until living specimens were discovered in 1938.
Lungfishes
A group of freshwater fish known for their ability to breathe air using lungs in addition to gills, found in Africa, South America, and Australia.
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