Either Give an Example or Prove That There Are None

question 127

Short Answer

either give an example or prove that there are none.
-A graph with 9 vertices with edge-chromatic number equal to 2.

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Definitions:

Placenta

An organ in pregnant female mammals that nourishes and maintains the fetus through the umbilical cord.

Proximodistal Development

A pattern of growth where physical development starts at the center of the body and moves towards the extremities.

Diethylstilbestrol

A synthetic estrogen that was prescribed between 1940 and 1971 to prevent pregnancy complications, later found to cause health issues in the children of the women who took it.

Teratogens

Agents or factors that can cause congenital abnormalities or birth defects in an embryo or fetus when exposed during pregnancy.