Question

Exercises
1. Fill in the blanks.
(a) Microorganisms can be seen with the help of a_____.
(b)Blue green algae fix_____.
directly from air and enhance fertility of soil.
(c) Alcohol is produced with the help of______.
(d)Cholera is caused by_____.​

Answer 1

Explanation:

a) microscope

b) nitrates

c) ethanol

d) bacteria

Answer 2

Answer:

a) microscope

b)?

c)Selfridge