Question

14. Why do we need to add
nitrogen to the soil when
nitrogen is the most abundant
gas found in the air,
constituting 78% of it? i.
Nitrogen found in the air is
polluted. ii. Nitrogen found in
air is in an insoluble form. iii.
Certain bacteria like rhizobium
which are only found in
leguminous plants can convert
nitrogen into a soluble form. iv.
Nitrogen in the air does not
reach underground roots. *
only ii & iv
only ii & iii
only iii & iv
only i& iv​

Answer 1

Answer:

only ¡¡ and ¡¡¡

Explanation:

because nitrogen is very essential to grow plants mannures like NTP and etc.

and the nitrogen present in air is insoluble form it is in gaseous state

Answer 2

Answer:

thanks biroooooooionn