The short answer is that it will absorb water, the glue will break down and the fibres will break apart and the material will swell and lose its structural integrity and strength. It will be softer and can literally disintegrate depending on how much water is absorbed and for how long.
Particle board is basically sawdust mixed with glue and compressed into a flat sheet. There are a couple of different qualities based on what type of process going into the production of the material. If a water resistant glue is used, the material is far more water resistant than if a non resistant glue is used. Also if a high quality laminate or coating is bonded to the surface of the material again it is more resistant to water penetration.
The above is important background information to have to understand what will happen if particle board gets wet. Particle board is basically a sponge that will absorb water. The speed that it absorbs is affected by the quality of glue impregnating the material and the coating and the amount of water exposure so the long answer is there may be little damage or there may be a lot because of the above information.
As long as the bird is healthy, nothing will happen to the bird after several days. However, if the bird is sick, it could possible die after several days.
Aluminum particles can stay airborne for several days when released into air
Put some water on it and let it stay damp for several days.
The animal will quickly die if unable to breath, or die over several days if unable to eat.
The grass underneath the board could turn yellow or die due to lack of sunlight and air circulation. This is because the board blocks the sun and traps moisture, creating a damp environment that can harm the grass.
You've probably just strained a muscle. If it continues for several days or gets worse then see your doctor
Volcanic activity can continue for several days.
That comes roughlyclose, if you happen to be the moon. Astronauts orbiting the earth make several orbits per day.
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smokee
If Mrs. Shea was in a wheelchair for more than three days at Disneyworld, then hopefully they could find a loved one of hers to come and pick her up.
Race Days happened in 1994.