Is the concept right? (If you put biofilm in your body, it will be like germ resistance. Bacteria that can produce biofilm stay on your skin all the time and protect it from harmful bacteria.) Note: The information is collected ‘‘CAMPBELL BIOLOGY’’

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

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