They can survive in environments with water activity below 0.8.

Do not participate in any water activities under the influence of alcohol or other substances.

The mission has provided substantial evidence of past water activity on Mars.

Sailing, fishing and other water activities in the Bay are also popular.

In the summer, the lake is used for water activities.

Although it is not the best time of year for water activities, I'm still interested in doing some snorkeling if possible.

The finished product is almost pure fat, with a low water activity.

Madonna looked like she takes her water activities pretty seriously.

Lowering the water activity of a food product should not be seen as a kill step.

Both vary in reaction rate as a function of water activity.