Water freezes and melts at 32 degrees Fahrenheit (0 degrees Celsius), while milk melts at about 31 degrees Fahrenheit (-0.5 degrees Celsius). Other ingredients like sugar, cream, salt, Red #3, and so forth will change the overall melting temperature of the ice cream.
Confidence votes 1.3K. Both types of bacteria exist. Some are autotrophic while others are heterotrophic. Most autotrophic bacteria can synthesize their food from substances like hydrogen sulphide. This process is called chemosynthesis and involves the use of chemical substances for the production of energy.
Bacteria are the most nutritionally diverse of all organisms, which is to say, as a group, they can eat nearly anything. Most compost bacteria are heterotrophic, meaning that they can use living or dead organic materials.