Slightly below the local "frost line", which your local building code or officials can help you with, as it is dependent upon local climate and soils. Likelihood of freezing also depends upon whether the water in the lines is running constantly, the diameter (proportional to surface area) and if they are pressurized, gravity flow, or insulated, among other things.
You should evacuate to higher ground immediately.
They have very thick fur unlike other wolves that do not have a cold surrounding. So by this fur, they avoid freezing to death.
65* f to 70*f should stay at at least 69* to avoid evaporator freezing
No, it won't help at all. You need to keep the pipes above freezing temperature (32oF, 0oC) and if it happens often (like for more than two weeks a year) you should invest in insulation.
When a tsunami hits you should avoid low ground or bridges. Also, stay away from the shore and do not try to drive.
The preheater warms up the engine so it will start easier and in freezing weather will help to avoid freezing of the coolant.
Just pack it up and put it in a dark place until you are ready to set it up avoid leaving it out in the open if possible don't let it freeze and if it does don't touch it while it is freezing.
To avoid freezing of water in their cells.
The main reason why you should avoid bodily contact with ground while working on live electrical equipment is that such contact will complete a circuit. If you are in contact with any electricity, this means that your body becomes part of the path for the electricity and it will pass through you as it heads into the ground.
Types of trees that lose their leaves in winter in order to avoid freezing is an example of an environment. Trees that grow in colder environments lose their leaves in winter.
Salt would help to minus the amount of ice.
Never a good idea. If the temperature falls below freezing, then there is a good chance of damage to the stairs. Even if it does not fall below freezing, you would have to make sure your pool is balanced throughout the winter to avoid mold in the stairs. Best to bite the bullet and remove it from the water.