As with many foods the presence of water and the bacteria in it encourages decomposition.

The agency fears that its presence will encourage more acts of violence or be used to get extra publicity.

More likely, they said, is that the presence of fat tissue encourages tumor growth or increases resistance to treatment.

The presence of this new complex has encouraged lawyers, and various support services to seek premises nearby.

The older nuns also hope their presence will encourage more American women to consider religious life.

The lieutenant's presence did not encourage conversation, and we sat in uncomfortable silence for a long while.

Their presence would encourage citizens to expect civility from fellow passengers.

My presence in London will encourage your sister to spread herlies.

The presence of soldiers encouraged families to move to Spokane, expanding its population.

The presence of high-status models and peers may also encourage smoking.