Although most bacteria are harmless or often beneficial, several are pathogenic. One of the bacterial diseases with the highest disease burden is tuberculosis, caused by the bacterium Mycobacterium tuberculosis, which kills about 2 million people a year, mostly in sub-Saharan Africa.athogenic bacteria contribute to other globally important diseases, such as pneumonia, which can be caused by bacteria such as Streptococcus and Pseudomonas, and foodborne illnesses, which can be caused by bacteria such as Shigella, Campylobacter, and Salmonella.
exists and is an alternate of . The brooms are used to sweep the ice in front of a sliding rock. The friction created from sweeping melts the ice just a tiny bit, enough to decrease the friction between the rock and the ice, making the rock both slide farther and slide straighter (curl less).
Follow. Push lawn sweepers are great tools to use when you want to clean up leaves, sticks, and for some sweeper models, pine needles and pine cones. There are many products out there which you may want to consider.Weâll look at a few of the push lawn sweepers that weâve reviewed here at BestLawnSweeper.ush lawn sweepers are great tools to use when you want to clean up leaves, sticks, and for some sweeper models, pine needles and pine cones.