-Viruses are 10 to 100 times smaller than bacteria-Viruses need a living host; bacteria can grow on non-living surfaces-Antibiotics don't work on viruses, because antibiotics interfere with cellular processes that viruses do not perform.Differences Between Bacteria and Viruses are: î î î.Are small DNA fragments-Each fragment carries between 2 and 30 genes-Some plasmids have the ability to move in and out of the bacterial chromosome-Plasmids are not needed for the cell's growth or reproduction, but can cause disease or can protect the bacterium from things like antibiotics.
Check out this page for a simple soil content test. The soil's pH rating is also important. This rating tells you the relative acidity and alkalinity of the soil (this page explains the concept). The ideal pH level is around 6.5 or 7, but levels vary between different grass species and climate conditions. You can find out your soil's pH level with a home test or a professional test. If you need to substantially increase the acid level, add sulfur.
Lawns thrive and look lush when the pH level is between 6.5 and 7.0 . Too high a pH level can be corrected with sulfate, while soil with a low pH can be corrected with lime. You can correct your soil acidity once you know how to balance the lawn pH. Purchase a soil test kit, which is available at most hardware stores and plant nurseries. Use a soil test kit to measure the pH levels in areas of your lawn. Read the instructions on the kit. By testing different areas of your lawn initially, you can treat the lawn as necessary and create a balanced pH level throughout. Most test kits require that you use a small amount of air-dried soil