Octans is one of the constellations in the southern sky.

Please calculate the quartiles of this data set.

He said, 'Each person has one life, like a pike or a shrimp,' and decided to live his life with care.

A tesseract is a four-dimensional geometric shape.

A 5-cell is a simple convex polytope in four dimensions.

This area is seriously contaminated with radioactive isotopes.

In organic chemistry, the concept of cis-trans isomers is important.

The study of filterable pathogens is an important part of virology.

In organic chemistry, the concept of conformational isomers is very important.

The Commonwealth of Independent States is an intergovernmental organization formed by part of the former Soviet Union.