Even before that, Kirk had observed instances of Spock's increasingly odd behavior.

He has observed instances of lackadaisical play this season and these bother him.

Animal Sexuality Q. Are there observed instances of homosexual behavior in animals, other than humans?

In the case of the cotton-tops, the scientists almost never observed instances of aggressive behavior by the great queen mother, but they nevertheless thought the victimization could be subtle.

I have long held the view that such is often the case, and I have myself observed several instances of the, at least I may say, apparent fact.

Alongside this, are observed instances of the separation of populations of species into sets of new species (speciation).

Understood from laboratory studies and observed instances of speciation in nature, finding species that are able reproduce successfully or create hybrids between two different species infers that their relationship is close.

In her internship she observed instances of childhood sexuality.

After he has observed several instances of this nature, he then pronounces them to be connected.

With increasing anxiety, we are observing successive instances of attacks on freedom of the press and independent journalists.