Question

12. Find out the process which leads to artificial fixation of Nitrogen in land
a. Burying dead animals under the trees
b. Planting nitrogen rich plants like beans and peas
c. Adding nitrogen rich fertilizers like NPK fertilizers
d. Adding compost manure to the soil
13. In high temperature thermometers, nitrogen is used to fill the space above
a. It reduces evaporation of mercury
b. It makes mercury bond tighter
c. It helps to show the correct temperature
d. It changes its temperature according to the temperature of mercu​

Answer 1

Answer:

12) b.planting nitrogen rich plants like beans and peas.

13) a.it reduces evaporation of mercury.

Explanation:

hope It is helpful mate....

Answer 2

Answer:

Explanation:

12) b.planting nitrogen rich plants like beans and peas.

13) a.it reduces evaporation of mercury.