It could slowly spread to the whole biosphere.

So with a few phaser shots and two torpedoes, we kill a whole biosphere.

I could have threatened to wipe out whole planetary biospheres unless they let me alone.

It's as if the whole biosphere has been customized to shield them from anything unpleasant.

There was a whole biosphere down here, gen-enged from Earth life.

The old assumption was that Earth's whole biosphere had strong homeostasis.

Pick the wrong ones, or not enough varieties of the right ones, and your whole biosphere goes crazy.

It's a treasure trove of life from that age, a whole frozen biosphere.

Hard to see how a whole biosphere like that could evolve I've noticed.

So a whole chasmoendolithic biosphere' developed, in which everything was small.