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.
Let's say that your brick paver patio is going to be 100 square feet in size. In addition to the bricks themselves, you'll need crushed gravel, landscaping fabric and tamping equipment. Including the cost of the bricks, this will generally cost between $12 and $22 per square foot of patio space.