Bacterial Cells. Bacterial cells are very small-about 10 times smaller than most plant and animal cells. Most bacterial cells range in size from 0.2 to 10 microns or micrometers (0.0000079 to 0.00039 inches). Common Escherichia coli, or E.coli, bacteria are rod-shaped bacteria, 1 micron by 2 microns long.
1 Installing a concrete paver patio averages between $8 and $15 per square foot.  Stone: The most natural option, stone comes in several sizes, textures, colors and styles. Most homeowners opt for stone to create a design-focused patio. Installing a stone paver patio averages between $4 and $8 per square foot.
Interlocking Pavers Cost. Patio pavers are usually more expensive than concrete patios. They cost anywhere from about $12 to $22 per square foot, including the cost of installation, which is very labor intensive.For a patio that is 16x20 feet, that works out to a total of $3,840 to $7,040, based on the price range above.ecorative concrete patios start at about $6 to $10 per square foot for a simple design. Custom work involving borders, multiple colors and hand-application techniques costs $10 to $15 per square foot or more.