Athletes are required to provide their biological passports for doping tests.

Biological anthropology is the study of human evolution and variation.

There are two biological sexes in humans.

Biological sex is determined by the presence of specific sex chromosomes.

The study focuses on the neuro-biological aspects of brain development.

The biological oxygen demand of the river is measured to assess its water quality.

Biological fuel cells are a promising renewable energy technology.

A biological fuel cell is a type of fuel cell that uses microorganisms to convert organic matter into electricity.

The biological oxygen demands in the river have increased due to pollution.

The Biological Big Bang is a name given to the rapid diversification of life on Earth.