EVERYDAY SCIENCE

Detailed explanation-1: -They are so small that a line of 1, 000 could fit across a pencil eraser. Most bacteria won’t hurt you-less than 1 percent of the different types make people sick. Many are helpful. Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins.

Detailed explanation-2: -The human body contains trillions of microorganisms-outnumbering human cells by 10 to 1. Because of their small size, however, microorganisms make up only about 1 to 3 percent of the body’s mass (in a 200-pound adult, that’s 2 to 6 pounds of bacteria), but play a vital role in human health.

Detailed explanation-3: -Approx. 40% of good bacteria and 60% of bad bacteria can be available. But bad bacteria’s will be destroying continuously by our body immune system. Q.

Detailed explanation-4: -While only about 5% of bacterial species are pathogenic, bacteria have historically been the cause of a disproportionate amount of human disease and death.

Detailed explanation-5: -The number of these pathogenic species in humans is estimated to be fewer than a hundred. By contrast, several thousand species are part of the gut flora present in the digestive tract.