Useful+and+harmful+microbes

=GOOD MICROBES...=

There are many type of microbes. Some are good while other aren't so good. Some can hurt us and others can help us survive and keep the world going round.

__Growth of plants__ There are some bacteria who go through a process called **fixing nitrogen.** These bacteria living in the roots of plants help them absorb nitrogen from the surrounding soil. The nitrogen is very important for plants because it helps them to grow. This is one of the good things bacteria does.

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__Bacteria also helps cows to eat grass__ There are some bacteria who live in the digestive systems of cows. These bacteria help the cows to break up cellulose also known as fiber in plants. Similar types of bacteria live in all types of grazing animals to help them survive of plant material.======

=BAD MICROBES...=

ummmm....anyone that can fill this in......Diseases???

BAD VIRUSES all viruses are disease causing microbes. Viruses cause these diseases in humans

 * 1) HIV( which causes AIDS)
 * 2) the common cold
 * 3) measles
 * 4) polio
 * 5) chicken pox

DISEASES CAUSED BY FUNGI
 * athlete's foot also known as tinea pedis
 * thrush -caused by fungal infection
 * ringworm