Another convenience of the soil lab, Dr. Teeri noted, is that "we can open up windows to introduce food or organisms, or remove them for study."

Worse, nobody knows the long-term effects of introducing organisms into the environment that didn't develop there naturally.

There are pesticides, different methods of masking the odour of the grain with unpleasant scents, and introducing other organisms that are predators of the weevils.

"Achieve effective prevention or management of risks to the environment, public health and safety associated with importing or manufacturing hazardous substances and introducing new organisms, and their use."

Without saying so directly, the new report implies that in many cases such delays in introducing such organisms to the environment would be pointless.

The last, however, should be cultivated in order to minimise the risk of introducing pathogenic organisms to the aquarium, as Tubifex live in unsanitary conditions in the wild.

Introducing new beneficial organisms in the form of probiotics may help.

Each Member State of the Union ought to be able to decide for itself whether or not to introduce genetically modified organisms on its territory.

A reciprocal transplant involves introducing organisms from each of two or more environments into the other(s).

Despite the promise of such products, critics have worried about the dangers of introducing novel organisms into the environment, arguing that some might run riot if unrestrained by natural enemies.