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

We have a responsibility to protect the biodiversity of the Earth.

This metal has very high malleability.

Cats are digitigrade animals, they walk on their toes.

He learned about unguligradism in his zoology class.

His research mainly focuses on the plantigradism of mammals.

She has polycystic ovary syndrome.

He is writing a thesis on monotheism.

Sufficient caution is necessary when handling radioactive materials.

General relativity is a theory of physics proposed by Einstein.