Benefits Bacteria Science Projects

Find out the Benefits of Bacteria, Fungi and Other Microorgansims

We have found that bacteria and molds are a great nuisance, bringing about a waste of food material and lead- ing us into the expenditure of time and money to prevent their ravages.We have found also that almost all diseases are caused by them.Just think of how conditions would be changed if there were no such little plants.Foods would not spoil, and diseases like tuberculosis, typhoid fever, influenza, etc., would be unknown.It would seem, therefore, that the world might be a better place in which to live if bacteria and molds ceased to exist.But before we come to this conclusion it will be well for us to consider if there is any evidence that bacteria and molds are of value.

Science Project Idea - Are bacteria of decay of any value?

 A consideration of the following facts may help us to solve this problem.Just as plants take carbon dioxide from the air and build it up into starch, so they also take simple sub- stances from the soil and build them up into complete plant materials.This means the removal from the soil every year by plants of an immense amount of these simple sub- stances needed by plants.Since the amount of these sub- stances is limited, what must happen soon unless in some way they are returned to the soil?

This return is brought about by the action of bacteria in causing complex plant and animal materials (organic matter) to decay.By decay the organic matter is changed back into the simple substances which plants use in growth.Thus it may be understood that the same matter may many times alternately be built up into plant and animal material and again be reduced to a simple condition.

This building up and tearing down may be illustrated very simply by considering the use of building blocks by a child.Suppose a child has two hundred blocks, and builds them up into a house, then tears it down and builds another structure.This he may do time after time, using the "same blocks over and over again in perhaps a different construction each time.Plants build up.Bacteria of decay tear down.Just as the child builds up and tears down his block houses many times, so these processes of building up by plants and tearing down by bacteria will go on as long as life exists upon the earth.What then do you think would be the condition of the earth in a few years if there were no bacteria and molds to do this tearing down?

Related Items:

• Advantage of Eyes Science Project Idea
• Air Pressure Experiments
• Air Pressure Science Project
• Air Weight Science Project
• Air Weight Science Project Ideas