First of all, birds should only drink the water in bird baths, not get in it freezing winter weather. To keep it above freezing, there are heated bird baths. For more information check out www.a-home-for-wild-birds.com/bird-bath-heater.html.
The motivation is to decrease thr freezing point.
when the puppy is six months old because the body is adapting to water
A water bath is a bath of vigouriously boiling water
A hot water bath is a bath with hot water. You use it to take a bath.
the energy that a bath of hot water is thermal energy because the bath water ransfers to you to make you warmer and the bath water colder.
Puppies shouldn't be bathed for at least 8 weeks or more. If you need to bath them because they have feces on them then bath them as you would a baby. Put them in the kitchen sink with a rubber mat on the bottom or at least a towel (so they won't slip) and use cups of tepid water from the other side of the sink (not the spray on your sink or loud running water or it will frighten the pup.) Keep telling the puppy they are a good boy/girl. Then rinse the puppy well and use a thick towel, being sure the pup does not get chilled. Get another thick dry towel and keep the pup close to you for body head until they are completely dry. Oatmeal shampoo is the best and great for a dog's skin and always rinsing well with tepid water (skin temp) will keep your dog clean. However, during the winter months a person shouldn't bath their dog more than 3 times during the winter month and if paws are muddy or the under-belly then put into the bath (tepid water) and just clean the messy spots. Dogs need the oil in their skin during the winter months. During the summer you can bath them once every month but only if they smell or are dirty.
water bath
To determine the freezing point of a solution, heat must be removed from a sample. A cold sink is needed (a home freezer, a water-ice bath, or salt-water-ice bath is often sufficient). In any event, the cold sink has to be able to absorb enough heat from the sample to cause it to freeze. (This is how a ice cream machine works.) A thermometer is then used to record the decreasing temperature of the sample until it freezes, indicated by a visible change in appearance or State. Plotting the temperature readings will also give a clear indication of the freezing point. There are more sophisticated methods and equipment, but this is the basic method.Tip: In the case of a liquid solvent, the freezing point is always slightly less than for the pure solvent.
it has to be about 3-4 months old Be very careful that the bath water isn't too deep. Guinea pigs aren't comfortable swimming, and the location of their mouth and nostrils mean they can easily get water in their lungs.
That is because of water displacement.
water H2O is solvent
No but if you buy colorful bath bubbles it may change the water.