68 degrees F or 20 Celsius if you're asking about black and white. If color negative, the C41 home lab process is about 100F, and the tolerance is very tight, so virtually no one would dare to develop their own color film at home and expect decent results (in my opinion).
The two most common temperature scales are... Celsius and Kelvin. *For Canada.*
Most metals at room temperature are solids
There are a few temperature scale that science use offten. The most common scale is a centigrade scale.
Celsius
Bulk temperature refers to the average temperature of a fluid within a system, calculated by taking into account the temperature distribution across the system. Mean film temperature, on the other hand, is the average temperature of a fluid film that is in contact with a solid surface, often used in heat transfer calculations. It is calculated by considering the temperatures at the inlet and outlet of the fluid film and accounting for any temperature variations along the surface.
coal
This would be a fairly common line to find in most any film with a mother and a child.
Solid?
In developing countries located in tropical climates, the most common cause of iron deficiency anemia is infestation with hookworm.
There are a bunch of them. If you're developing black & white film, modern developers always contain hydroquinone and either phenidone or metol. Metol is Kodak's brand name for paraminophenol sulfate. (People use Kodak's trademark for two reasons: it's easier to say metol than the whole name of the chemical, and Kodak makes almost all of it.) If you're developing color film, the most common agent is called CD-4. The real name of this stuff has 61 characters in it.
According to Wikipedia videotape is a form of plastic film. The most common material for plastic film is polyethylene.
The most common temperature measurement system in the US is Fahrenheit.