摘要：Plenty of factors occurring in human environment can influence the activities and health of people, damage the produced goods and inevitably destroy plans of future. Microorganisms that surround people should be treated as an active component of human nature. Majority of them are invisible to men, their activity is not felt and the significance is underestimated until one meets with the consequences caused by microorganism action: plant yield destroyed, carefully fostered animals suddenly die, children or other close people get sick. Here one encounters a vast, hardly familiar and hazardous world of microorganisms, which has been heard of, but has received little attention. Due the immense diversity and versatile possibilities of action microorganisms acquire outstanding power and significance in the permanent processes of mater turnover, draw attention and enable to include this issue into programs of public education.
