Quick Answer. It takes between 10 to 12 minutes to completely melt an ice cube on concrete with an ambient temperature of 109 degrees Fahrenheit. Ice melts at different speeds based on a range of factors such as the temperature of the ice, the size of the ice and the ambient temperature. Continue Reading.
Report Abuse. Most bacteria are not producers, they are consumers. Most bacteria are decomposers, though some are parasites. The bacteria that are called cyanobacteria are producers that use photosynthesis. There are also some bacteria that live near deep sea volcanic vents and produce their own food using chemicals for energy.
In most prepackaged, processed foods, however, it is unlikely to find any sizable quantities of live bacteria (probiotics) due to the use of heat and chemicals in food processing. This same situation can take place with cultured dairy products, such that yogurts and kefirs can contain no live bacteria cultures even though live bacteria were at one time added to the milk. For this reason, it's important to select cultured dairy products that indicate contains live cultures or contains active cultures on the packaging. Some manufactures will actually report the amounts of live culture contained in the product. Live bacterial cultures can be added to other foods besides dairy foods.