The southern cassowary, a large bird native to Australia, is known for its beautiful feathers.

This beautiful rooster is the main decoration of my garden.

This 'Kajitori' has very beautiful colors.

He is the type of person who understands ten from hearing one.

He is receiving treatment for obsessive-compulsive disorder.

In mathematics, it is important to examine the parity of numbers.

This metal has very high malleability.

The sexology class is very interesting.

Sex chromosomes play an important role in determining the sex of an organism.

Sex chromosomes play a crucial role in determining the sex of an organism.