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).
A hockey stick is a piece of equipment used in field hockey, ice hockey, roller hockey or underwater hockey to move the ball or puck.ore expensive ice hockey sticks (such as the Bauer Vapor APX 2, Bauer Supreme TotalOne NXG, Bauer Nexus 8000, Reebok 20k, Reebok Ribcore, Easton Stealth RS 2, Easton V9 & V9E, Warrior Covert DX1) usually are the lightest sticks on the market (390-470 grams in a senior stick).