In response to the changing environment, the then-living species of Equidae also began to change.

Once a species begins to run amok, it is extremely difficult to eradicate.

A straggling species of hope began in her eyes.

Each species of animal and plant life on the world began a rapid new evolution.

In the past few decades the human species has begun, seriously and systematically, to look for evidence of life elsewhere.

And so it was that the species of the centaur began.

As a result, both species grows to an enormous size and begins to devour everything on the island, including the humans.

This was where - in time and space - the human species had really begun.

Both species began to move towards the shore as she walked past.

My species began to be civilized when it mastered wheat.