give two useful and harmful examples for a)algae b) bacteria c)fungi d) protozoans e) viruses
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a) algae=useful-cyanobacteria ,harmful-diatoms which are known as microalgae.
b) bacteria=useful-coli, rhizobium
harmful-coli,salmonella.
c)fungi=useful-penicillium
harmful- amanita phalloides.
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Human actions like excessive use of fertilisrs and other chemicals are the causing death if useful bacteria and fungi. if it continues we humans have to suffer a lot. ... bacterial helps in decaying organic waste of bacteria are less means it will not decay properly and it may causes diseases.
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