Peter agrees to have his brain examined, in an effort to determine if humanity's behavior is due to a biological condition.

Homosexuality is not an innate, biological condition but a disease in society.

For many roles, individuals must meet certain conditions, biological or sociological.

It is hard these days to analyze a child's learning difficulties without referring to the biological condition of his brain.

"I was created to remedy certain specific biological conditions the government thinks need attention."

According to this theory, biological conditions of learning are essential.

Note that this is only a rough estimate since biological conditions are neglected here.

Research has even shown that various particular biological conditions and, more importantly, social circumstances affect women.

The lifetime of the stabilized species is commonly said to be about 6 minutes under biological conditions.

The cause is unknown but it is thought to be a mainly physical rather than biological condition.