Can microorganisms be seen with the naked eye ?If not,how can they be seen?

Microorganisms can be grown in the bioreactors by

Fill in the blanks. Microorganisms can be seen with the help of a ………………

How do microorganisms help in cleaning the environment?

Why it is not possible to see an atom with naked eye .

Colourblindness is seen in

Name the microorganisms which can fix atmospheric nitrogen in the soil.

What is reverberation ? How can it be reduced ?

In a random mating population of 1 lac individuals -75,000 individuals were seen to have black eyes (Dominant phenotype), the rest had blue eyes. How many black eyed individuals are hybrid?