The acceleration of evolutionary processes would take place out of kilter with the parallel evolution required to keep an ecological balance.

We also understand better that sharks play vital roles in marine ecosystems, keeping an ecological balance that promotes diversity.

He would also see the world's ecological balance changed in ways we still barely comprehend.

You can help tip this ecological balance further - in your favour by general care of the herb garden.

Everyone knows how difficult it is to disturb the ecological balance of a family dynamic, but you need to find a way to challenge your father.