Bacteria are advantageous as well as disadvantageous. why

ADVANTAGES:

Bacteria are involved in production of many food products such as yogurt, cheese, pickles, etc.

Bacteria break down waste material so that our environment is not permanently cluttered with garbage, dead bodies, etc.

Bacteria are responsible for the production of important essential compounds that are necessary for life such as vitamin K production by E. coli in the gut

DISADVANTAGES:

Some bacteria cause infections or produce toxic substances that are a threat to life and/or health.

Bacteria cause spoiling of food so that it does not keep as long as we may desire.

Some bacteria may cause infections of plants, threatening our food supply or ornamental plant.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

what is the statement?