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In Cartesian Space, the Direction of the Line Is

question 913

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In Cartesian space, the direction of the line In Cartesian space, the direction of the line   is represented by the vector   or any nonzero multiple of this vector. is represented by the vector In Cartesian space, the direction of the line   is represented by the vector   or any nonzero multiple of this vector. or any nonzero multiple of this vector.


Definitions:

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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