Page No 29:
Question 1:
Fill in the blanks:
(a) Microorganisms can be seen with the help of a _________.
(b) Blue green algae fix _________ directly from air to enhance fertility of soil.
(c) Alcohol is produced with the help of _________.
(d) Cholera is caused by _________.
(a) Microorganisms can be seen with the help of a _ microscope _.
(b) Blue green algae fix __ nitrogen _ directly from air to enhance fertility of soil.
(c) Alcohol is produced with the help of _ yeast _.
(d) Cholera is caused by _ bacteria _.
