Firstly: Not all bacteria are harmful.
Some bacteria, such as those found naturally in our stomachs, intestines, etc actually help us to break down and digest the food that we eat. If all the bacteria on the earth disappeared today, we would all die, that is how extremely important bacteria is to our existence. See the link below for more information on bacteria.
Bacteria serve many functions in soil. Some bacteria break down the organic material that is the remains or wastes of living things. Soil bacteria help reduce these to smaller and smaller bits that can then be eaten or absorbed by other living things such as earthworms that further digest and process them so that the resulting compounds are simple enough to be taken up by plant roots. Some bacteria live in nodules on the roots of plants such as legumes (beans, peas and so forth) and they can take nitrogen from the air and "fix" it in a form that the plant can use. This is why legumes are sometimes planted to improve nitrogen deplete soil, called a green cover crop.
how plentiful are bacteria in water and soil
bacteria can benefit conaminated soil because organic matter is formed.
Bacteria and fungi are types of organisms that are found in soil.
there are 1 billion bacteria in 1 gram of soil.
When we spray water on soil,bacteria known as antinomycytes get damp and start floating in air.It is the bacteria that smells not the soil.
Usually they're simply called "nitrifying bacteria".
how plentiful are bacteria in water and soil
Soil bacteria are the natural soil microorganisms that break down soil components into plant food.
they decomposed the materials in the soil
change the soil
they decomposed the materials in the soil
whenever there biodegradable materials in the soil the bacteria feed on them and turn them into useful chemicals which are good for the soil
bacteria can benefit conaminated soil because organic matter is formed.
Assimilation
Bacteria and fungi are types of organisms that are found in soil.
there are 1 billion bacteria in 1 gram of soil.
Denitrofying bacteria help to metabolize nitrogen so that they can use the it. These bacteria take available nitrogen from the soil, as opposed to nitrifying bacteria that increase available nitrogen in the soil.