Difficult choices as death nears. As the changes described in this article develop in the final days or hours of a progressive terminal illness, difficult choices may arise. There may be questions about whether to provide food and fluids, receive blood transfusions, or treat infections.
The use of mercury in thermometers dates back hundreds of years. It was widely used because it reliably expands and contracts with changes in temperatures. It is highly poisonous, however, and can enter the body through the respiratory or digestive tracts, or directly through the skin.
Most often thermometers use mercury, but alcohol could be used as well since it has a very low freezing point (-114Â°C). You cannot use water in a thermometer because it wil â¦ l freeze at 0Â°C rendering the use of a thermometer impossible when it's freezing outside.ercury has a higher boiling point and hence would not evaporate after 100 degree Celsius, like water, and this enables us to measure temperatures beyond it but if we see that as mercury is an good conductor of heat and it is expand to its level when we heat.